diff --git a/beacon-chain/rpc/apimiddleware/BUILD.bazel b/beacon-chain/rpc/apimiddleware/BUILD.bazel
index 3a62eec0e3..d9710bb1ff 100644
--- a/beacon-chain/rpc/apimiddleware/BUILD.bazel
+++ b/beacon-chain/rpc/apimiddleware/BUILD.bazel
@@ -16,7 +16,7 @@ go_library(
         "//api/gateway/apimiddleware:go_default_library",
         "//api/grpc:go_default_library",
         "//beacon-chain/rpc/eth/events:go_default_library",
-        "//beacon-chain/rpc/eth/helpers:go_default_library",
+        "//beacon-chain/rpc/eth/shared:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//proto/eth/v2:go_default_library",
diff --git a/beacon-chain/rpc/apimiddleware/custom_hooks.go b/beacon-chain/rpc/apimiddleware/custom_hooks.go
index 1a1d6a14a4..ae9f8e9307 100644
--- a/beacon-chain/rpc/apimiddleware/custom_hooks.go
+++ b/beacon-chain/rpc/apimiddleware/custom_hooks.go
@@ -152,28 +152,6 @@ func wrapBeaconCommitteeSubscriptionsArray(
 	return true, nil
 }
 
-// https://ethereum.github.io/beacon-APIs/#/Validator/prepareSyncCommitteeSubnets expects posting a top-level array.
-// We make it more proto-friendly by wrapping it in a struct with a 'data' field.
-func wrapSyncCommitteeSubscriptionsArray(
-	endpoint *apimiddleware.Endpoint,
-	_ http.ResponseWriter,
-	req *http.Request,
-) (apimiddleware.RunDefault, apimiddleware.ErrorJson) {
-	if _, ok := endpoint.PostRequest.(*SubmitSyncCommitteeSubscriptionRequestJson); ok {
-		data := make([]*SyncCommitteeSubscriptionJson, 0)
-		if err := json.NewDecoder(req.Body).Decode(&data); err != nil {
-			return false, apimiddleware.InternalServerErrorWithMessage(err, "could not decode body")
-		}
-		j := &SubmitSyncCommitteeSubscriptionRequestJson{Data: data}
-		b, err := json.Marshal(j)
-		if err != nil {
-			return false, apimiddleware.InternalServerErrorWithMessage(err, "could not marshal wrapped body")
-		}
-		req.Body = io.NopCloser(bytes.NewReader(b))
-	}
-	return true, nil
-}
-
 // https://ethereum.github.io/beacon-APIs/#/Beacon/submitPoolSyncCommitteeSignatures expects posting a top-level array.
 // We make it more proto-friendly by wrapping it in a struct with a 'data' field.
 func wrapSyncCommitteeSignaturesArray(
diff --git a/beacon-chain/rpc/apimiddleware/custom_hooks_test.go b/beacon-chain/rpc/apimiddleware/custom_hooks_test.go
index d0b8fb76c6..9786635740 100644
--- a/beacon-chain/rpc/apimiddleware/custom_hooks_test.go
+++ b/beacon-chain/rpc/apimiddleware/custom_hooks_test.go
@@ -190,61 +190,6 @@ func TestWrapBeaconCommitteeSubscriptionsArray(t *testing.T) {
 	})
 }
 
-func TestWrapSyncCommitteeSubscriptionsArray(t *testing.T) {
-	t.Run("ok", func(t *testing.T) {
-		endpoint := &apimiddleware.Endpoint{
-			PostRequest: &SubmitSyncCommitteeSubscriptionRequestJson{},
-		}
-		unwrappedSubs := []*SyncCommitteeSubscriptionJson{
-			{
-				ValidatorIndex:       "1",
-				SyncCommitteeIndices: []string{"1", "2"},
-				UntilEpoch:           "1",
-			},
-			{
-				ValidatorIndex:       "2",
-				SyncCommitteeIndices: []string{"3", "4"},
-				UntilEpoch:           "2",
-			},
-		}
-		unwrappedSubsJson, err := json.Marshal(unwrappedSubs)
-		require.NoError(t, err)
-
-		var body bytes.Buffer
-		_, err = body.Write(unwrappedSubsJson)
-		require.NoError(t, err)
-		request := httptest.NewRequest("POST", "http://foo.example", &body)
-
-		runDefault, errJson := wrapSyncCommitteeSubscriptionsArray(endpoint, nil, request)
-		require.Equal(t, true, errJson == nil)
-		assert.Equal(t, apimiddleware.RunDefault(true), runDefault)
-		wrappedSubs := &SubmitSyncCommitteeSubscriptionRequestJson{}
-		require.NoError(t, json.NewDecoder(request.Body).Decode(wrappedSubs))
-		require.Equal(t, 2, len(wrappedSubs.Data), "wrong number of wrapped items")
-		assert.Equal(t, "1", wrappedSubs.Data[0].ValidatorIndex)
-		require.Equal(t, 2, len(wrappedSubs.Data[0].SyncCommitteeIndices), "wrong number of committee indices")
-		assert.Equal(t, "1", wrappedSubs.Data[0].SyncCommitteeIndices[0])
-		assert.Equal(t, "2", wrappedSubs.Data[0].SyncCommitteeIndices[1])
-		assert.Equal(t, "1", wrappedSubs.Data[0].UntilEpoch)
-	})
-
-	t.Run("invalid_body", func(t *testing.T) {
-		endpoint := &apimiddleware.Endpoint{
-			PostRequest: &SubmitSyncCommitteeSubscriptionRequestJson{},
-		}
-		var body bytes.Buffer
-		_, err := body.Write([]byte("invalid"))
-		require.NoError(t, err)
-		request := httptest.NewRequest("POST", "http://foo.example", &body)
-
-		runDefault, errJson := wrapSyncCommitteeSubscriptionsArray(endpoint, nil, request)
-		require.Equal(t, false, errJson == nil)
-		assert.Equal(t, apimiddleware.RunDefault(false), runDefault)
-		assert.Equal(t, true, strings.Contains(errJson.Msg(), "could not decode body"))
-		assert.Equal(t, http.StatusInternalServerError, errJson.StatusCode())
-	})
-}
-
 func TestWrapSyncCommitteeSignaturesArray(t *testing.T) {
 	t.Run("ok", func(t *testing.T) {
 		endpoint := &apimiddleware.Endpoint{
diff --git a/beacon-chain/rpc/apimiddleware/endpoint_factory.go b/beacon-chain/rpc/apimiddleware/endpoint_factory.go
index de98ed33bd..44af3ba3e1 100644
--- a/beacon-chain/rpc/apimiddleware/endpoint_factory.go
+++ b/beacon-chain/rpc/apimiddleware/endpoint_factory.go
@@ -67,7 +67,6 @@ func (_ *BeaconEndpointFactory) Paths() []string {
 		"/eth/v1/validator/blinded_blocks/{slot}",
 		"/eth/v1/validator/attestation_data",
 		"/eth/v1/validator/beacon_committee_subscriptions",
-		"/eth/v1/validator/sync_committee_subscriptions",
 		"/eth/v1/validator/sync_committee_contribution",
 		"/eth/v1/validator/prepare_beacon_proposer",
 		"/eth/v1/validator/register_validator",
@@ -266,12 +265,6 @@ func (_ *BeaconEndpointFactory) Create(path string) (*apimiddleware.Endpoint, er
 		endpoint.Hooks = apimiddleware.HookCollection{
 			OnPreDeserializeRequestBodyIntoContainer: wrapBeaconCommitteeSubscriptionsArray,
 		}
-	case "/eth/v1/validator/sync_committee_subscriptions":
-		endpoint.PostRequest = &SubmitSyncCommitteeSubscriptionRequestJson{}
-		endpoint.Err = &NodeSyncDetailsErrorJson{}
-		endpoint.Hooks = apimiddleware.HookCollection{
-			OnPreDeserializeRequestBodyIntoContainer: wrapSyncCommitteeSubscriptionsArray,
-		}
 	case "/eth/v1/validator/sync_committee_contribution":
 		endpoint.GetResponse = &ProduceSyncCommitteeContributionResponseJson{}
 		endpoint.RequestQueryParams = []apimiddleware.QueryParam{{Name: "slot"}, {Name: "subcommittee_index"}, {Name: "beacon_block_root", Hex: true}}
diff --git a/beacon-chain/rpc/apimiddleware/structs.go b/beacon-chain/rpc/apimiddleware/structs.go
index 41592d2b45..2c529586ba 100644
--- a/beacon-chain/rpc/apimiddleware/structs.go
+++ b/beacon-chain/rpc/apimiddleware/structs.go
@@ -4,7 +4,7 @@ import (
 	"strings"
 
 	"github.com/prysmaticlabs/prysm/v4/api/gateway/apimiddleware"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/helpers"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/shared"
 	ethpbv2 "github.com/prysmaticlabs/prysm/v4/proto/eth/v2"
 )
 
@@ -199,7 +199,7 @@ type VersionResponseJson struct {
 }
 
 type SyncingResponseJson struct {
-	Data *helpers.SyncDetailsJson `json:"data"`
+	Data *shared.SyncDetails `json:"data"`
 }
 
 type BeaconStateResponseJson struct {
@@ -288,16 +288,6 @@ type BeaconCommitteeSubscribeJson struct {
 	IsAggregator     bool   `json:"is_aggregator"`
 }
 
-type SubmitSyncCommitteeSubscriptionRequestJson struct {
-	Data []*SyncCommitteeSubscriptionJson `json:"data"`
-}
-
-type SyncCommitteeSubscriptionJson struct {
-	ValidatorIndex       string   `json:"validator_index"`
-	SyncCommitteeIndices []string `json:"sync_committee_indices"`
-	UntilEpoch           string   `json:"until_epoch"`
-}
-
 type ProduceSyncCommitteeContributionResponseJson struct {
 	Data *SyncCommitteeContributionJson `json:"data"`
 }
@@ -1211,7 +1201,7 @@ type SingleIndexedVerificationFailureJson struct {
 
 type NodeSyncDetailsErrorJson struct {
 	apimiddleware.DefaultErrorJson
-	SyncDetails helpers.SyncDetailsJson `json:"sync_details"`
+	SyncDetails shared.SyncDetails `json:"sync_details"`
 }
 
 type EventErrorJson struct {
diff --git a/beacon-chain/rpc/eth/beacon/BUILD.bazel b/beacon-chain/rpc/eth/beacon/BUILD.bazel
index 668eba714c..0b45bb98b9 100644
--- a/beacon-chain/rpc/eth/beacon/BUILD.bazel
+++ b/beacon-chain/rpc/eth/beacon/BUILD.bazel
@@ -37,6 +37,7 @@ go_library(
         "//beacon-chain/operations/voluntaryexits:go_default_library",
         "//beacon-chain/p2p:go_default_library",
         "//beacon-chain/rpc/eth/helpers:go_default_library",
+        "//beacon-chain/rpc/eth/shared:go_default_library",
         "//beacon-chain/rpc/lookup:go_default_library",
         "//beacon-chain/rpc/prysm/v1alpha1/validator:go_default_library",
         "//beacon-chain/state:go_default_library",
diff --git a/beacon-chain/rpc/eth/beacon/handlers.go b/beacon-chain/rpc/eth/beacon/handlers.go
index 8e5ee6f313..f171c8e2db 100644
--- a/beacon-chain/rpc/eth/beacon/handlers.go
+++ b/beacon-chain/rpc/eth/beacon/handlers.go
@@ -11,7 +11,7 @@ import (
 	"github.com/go-playground/validator/v10"
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/transition"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/helpers"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/shared"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
 	http2 "github.com/prysmaticlabs/prysm/v4/network/http"
@@ -38,7 +38,7 @@ const (
 // a `SignedBeaconBlock`. The broadcast behaviour may be adjusted via the `broadcast_validation`
 // query parameter.
 func (bs *Server) PublishBlindedBlockV2(w http.ResponseWriter, r *http.Request) {
-	if ok := bs.checkSync(r.Context(), w); !ok {
+	if shared.IsSyncing(r.Context(), w, bs.SyncChecker, bs.HeadFetcher, bs.TimeFetcher, bs.OptimisticModeFetcher) {
 		return
 	}
 	isSSZ, err := http2.SszRequested(r)
@@ -302,7 +302,7 @@ func publishBlindedBlockV2(bs *Server, w http.ResponseWriter, r *http.Request) {
 // successfully broadcast but failed integration. The broadcast behaviour may be adjusted via the
 // `broadcast_validation` query parameter.
 func (bs *Server) PublishBlockV2(w http.ResponseWriter, r *http.Request) {
-	if ok := bs.checkSync(r.Context(), w); !ok {
+	if shared.IsSyncing(r.Context(), w, bs.SyncChecker, bs.HeadFetcher, bs.TimeFetcher, bs.OptimisticModeFetcher) {
 		return
 	}
 	isSSZ, err := http2.SszRequested(r)
@@ -631,29 +631,3 @@ func (bs *Server) validateEquivocation(blk interfaces.ReadOnlyBeaconBlock) error
 	}
 	return nil
 }
-
-func (bs *Server) checkSync(ctx context.Context, w http.ResponseWriter) bool {
-	isSyncing, syncDetails, err := helpers.ValidateSyncHTTP(ctx, bs.SyncChecker, bs.HeadFetcher, bs.TimeFetcher, bs.OptimisticModeFetcher)
-	if err != nil {
-		errJson := &http2.DefaultErrorJson{
-			Message: "Could not check if node is syncing: " + err.Error(),
-			Code:    http.StatusInternalServerError,
-		}
-		http2.WriteError(w, errJson)
-		return false
-	}
-	if isSyncing {
-		msg := "Beacon node is currently syncing and not serving request on that endpoint"
-		details, err := json.Marshal(syncDetails)
-		if err == nil {
-			msg += " Details: " + string(details)
-		}
-		errJson := &http2.DefaultErrorJson{
-			Message: msg,
-			Code:    http.StatusServiceUnavailable,
-		}
-		http2.WriteError(w, errJson)
-		return false
-	}
-	return true
-}
diff --git a/beacon-chain/rpc/eth/helpers/BUILD.bazel b/beacon-chain/rpc/eth/helpers/BUILD.bazel
index b72a4950bc..76231f6c4f 100644
--- a/beacon-chain/rpc/eth/helpers/BUILD.bazel
+++ b/beacon-chain/rpc/eth/helpers/BUILD.bazel
@@ -13,6 +13,7 @@ go_library(
         "//api/grpc:go_default_library",
         "//beacon-chain/blockchain:go_default_library",
         "//beacon-chain/db:go_default_library",
+        "//beacon-chain/rpc/eth/shared:go_default_library",
         "//beacon-chain/rpc/lookup:go_default_library",
         "//beacon-chain/state:go_default_library",
         "//beacon-chain/state/stategen:go_default_library",
diff --git a/beacon-chain/rpc/eth/helpers/sync.go b/beacon-chain/rpc/eth/helpers/sync.go
index ca975d9277..a54405d321 100644
--- a/beacon-chain/rpc/eth/helpers/sync.go
+++ b/beacon-chain/rpc/eth/helpers/sync.go
@@ -10,6 +10,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/api/grpc"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/db"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/shared"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/lookup"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/sync"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
@@ -38,8 +39,8 @@ func ValidateSyncGRPC(
 		return status.Errorf(codes.Internal, "Could not check optimistic status: %v", err)
 	}
 
-	syncDetailsContainer := &SyncDetailsContainer{
-		Data: &SyncDetailsJson{
+	syncDetailsContainer := &shared.SyncDetailsContainer{
+		Data: &shared.SyncDetails{
 			HeadSlot:     strconv.FormatUint(uint64(headSlot), 10),
 			SyncDistance: strconv.FormatUint(uint64(timeFetcher.CurrentSlot()-headSlot), 10),
 			IsSyncing:    true,
@@ -58,35 +59,6 @@ func ValidateSyncGRPC(
 	return status.Error(codes.Unavailable, "Syncing to latest head, not ready to respond")
 }
 
-// ValidateSyncHTTP checks whether the node is currently syncing and returns sync information.
-// It returns information whether the node is currently syncing along with sync details.
-func ValidateSyncHTTP(
-	ctx context.Context,
-	syncChecker sync.Checker,
-	headFetcher blockchain.HeadFetcher,
-	timeFetcher blockchain.TimeFetcher,
-	optimisticModeFetcher blockchain.OptimisticModeFetcher,
-) (bool, *SyncDetailsContainer, error) {
-	if !syncChecker.Syncing() {
-		return false, nil, nil
-	}
-
-	headSlot := headFetcher.HeadSlot()
-	isOptimistic, err := optimisticModeFetcher.IsOptimistic(ctx)
-	if err != nil {
-		return true, nil, errors.Wrap(err, "could not check optimistic status")
-	}
-	syncDetails := &SyncDetailsContainer{
-		Data: &SyncDetailsJson{
-			HeadSlot:     strconv.FormatUint(uint64(headSlot), 10),
-			SyncDistance: strconv.FormatUint(uint64(timeFetcher.CurrentSlot()-headSlot), 10),
-			IsSyncing:    true,
-			IsOptimistic: isOptimistic,
-		},
-	}
-	return true, syncDetails, nil
-}
-
 // IsOptimistic checks whether the beacon state's block is optimistic.
 func IsOptimistic(
 	ctx context.Context,
@@ -216,17 +188,3 @@ func isStateRootOptimistic(
 	// No block matching requested state root, return true.
 	return true, nil
 }
-
-// SyncDetailsJson contains information about node sync status.
-type SyncDetailsJson struct {
-	HeadSlot     string `json:"head_slot"`
-	SyncDistance string `json:"sync_distance"`
-	IsSyncing    bool   `json:"is_syncing"`
-	IsOptimistic bool   `json:"is_optimistic"`
-	ElOffline    bool   `json:"el_offline"`
-}
-
-// SyncDetailsContainer is a wrapper for Data.
-type SyncDetailsContainer struct {
-	Data *SyncDetailsJson `json:"data"`
-}
diff --git a/beacon-chain/rpc/eth/shared/BUILD.bazel b/beacon-chain/rpc/eth/shared/BUILD.bazel
index 51c11f0fdb..eb02a88e09 100644
--- a/beacon-chain/rpc/eth/shared/BUILD.bazel
+++ b/beacon-chain/rpc/eth/shared/BUILD.bazel
@@ -10,7 +10,10 @@ go_library(
     importpath = "github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/shared",
     visibility = ["//visibility:public"],
     deps = [
+        "//beacon-chain/blockchain:go_default_library",
+        "//beacon-chain/sync:go_default_library",
         "//consensus-types/primitives:go_default_library",
+        "//consensus-types/validator:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//network/http:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
diff --git a/beacon-chain/rpc/eth/shared/request.go b/beacon-chain/rpc/eth/shared/request.go
index 9526567a0e..c0193f6a2c 100644
--- a/beacon-chain/rpc/eth/shared/request.go
+++ b/beacon-chain/rpc/eth/shared/request.go
@@ -1,9 +1,13 @@
 package shared
 
 import (
+	"context"
+	"encoding/json"
 	"net/http"
 	"strconv"
 
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/sync"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
 	http2 "github.com/prysmaticlabs/prysm/v4/network/http"
 )
@@ -48,3 +52,47 @@ func ValidateUint(w http.ResponseWriter, name string, s string) (uint64, bool) {
 	}
 	return v, true
 }
+
+// IsSyncing checks whether the beacon node is currently syncing and writes out the sync status.
+func IsSyncing(
+	ctx context.Context,
+	w http.ResponseWriter,
+	syncChecker sync.Checker,
+	headFetcher blockchain.HeadFetcher,
+	timeFetcher blockchain.TimeFetcher,
+	optimisticModeFetcher blockchain.OptimisticModeFetcher,
+) bool {
+	if !syncChecker.Syncing() {
+		return false
+	}
+
+	headSlot := headFetcher.HeadSlot()
+	isOptimistic, err := optimisticModeFetcher.IsOptimistic(ctx)
+	if err != nil {
+		errJson := &http2.DefaultErrorJson{
+			Message: "Could not check optimistic status: " + err.Error(),
+			Code:    http.StatusInternalServerError,
+		}
+		http2.WriteError(w, errJson)
+		return true
+	}
+	syncDetails := &SyncDetailsContainer{
+		Data: &SyncDetails{
+			HeadSlot:     strconv.FormatUint(uint64(headSlot), 10),
+			SyncDistance: strconv.FormatUint(uint64(timeFetcher.CurrentSlot()-headSlot), 10),
+			IsSyncing:    true,
+			IsOptimistic: isOptimistic,
+		},
+	}
+
+	msg := "Beacon node is currently syncing and not serving request on that endpoint"
+	details, err := json.Marshal(syncDetails)
+	if err == nil {
+		msg += " Details: " + string(details)
+	}
+	errJson := &http2.DefaultErrorJson{
+		Message: msg,
+		Code:    http.StatusServiceUnavailable}
+	http2.WriteError(w, errJson)
+	return true
+}
diff --git a/beacon-chain/rpc/eth/shared/structs.go b/beacon-chain/rpc/eth/shared/structs.go
index 08bf85fd4b..b53776448b 100644
--- a/beacon-chain/rpc/eth/shared/structs.go
+++ b/beacon-chain/rpc/eth/shared/structs.go
@@ -1,10 +1,12 @@
 package shared
 
 import (
+	"fmt"
 	"strconv"
 
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v4/consensus-types/validator"
 	eth "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 )
 
@@ -57,6 +59,12 @@ type AggregateAttestationAndProof struct {
 	SelectionProof  string       `json:"selection_proof" validate:"required,hexadecimal"`
 }
 
+type SyncCommitteeSubscription struct {
+	ValidatorIndex       string   `json:"validator_index" validate:"required,number,gte=0"`
+	SyncCommitteeIndices []string `json:"sync_committee_indices" validate:"required,dive,number,gte=0"`
+	UntilEpoch           string   `json:"until_epoch" validate:"required,number,gte=0"`
+}
+
 func (s *SignedContributionAndProof) ToConsensus() (*eth.SignedContributionAndProof, error) {
 	msg, err := s.Message.ToConsensus()
 	if err != nil {
@@ -228,3 +236,41 @@ func (c *Checkpoint) ToConsensus() (*eth.Checkpoint, error) {
 		Root:  root,
 	}, nil
 }
+
+func (s *SyncCommitteeSubscription) ToConsensus() (*validator.SyncCommitteeSubscription, error) {
+	index, err := strconv.ParseUint(s.ValidatorIndex, 10, 64)
+	if err != nil {
+		return nil, NewDecodeError(err, "ValidatorIndex")
+	}
+	scIndices := make([]uint64, len(s.SyncCommitteeIndices))
+	for i, ix := range s.SyncCommitteeIndices {
+		scIndices[i], err = strconv.ParseUint(ix, 10, 64)
+		if err != nil {
+			return nil, NewDecodeError(err, fmt.Sprintf("SyncCommitteeIndices[%d]", i))
+		}
+	}
+	epoch, err := strconv.ParseUint(s.UntilEpoch, 10, 64)
+	if err != nil {
+		return nil, NewDecodeError(err, "UntilEpoch")
+	}
+
+	return &validator.SyncCommitteeSubscription{
+		ValidatorIndex:       primitives.ValidatorIndex(index),
+		SyncCommitteeIndices: scIndices,
+		UntilEpoch:           primitives.Epoch(epoch),
+	}, nil
+}
+
+// SyncDetails contains information about node sync status.
+type SyncDetails struct {
+	HeadSlot     string `json:"head_slot"`
+	SyncDistance string `json:"sync_distance"`
+	IsSyncing    bool   `json:"is_syncing"`
+	IsOptimistic bool   `json:"is_optimistic"`
+	ElOffline    bool   `json:"el_offline"`
+}
+
+// SyncDetailsContainer is a wrapper for Data.
+type SyncDetailsContainer struct {
+	Data *SyncDetails `json:"data"`
+}
diff --git a/beacon-chain/rpc/eth/validator/BUILD.bazel b/beacon-chain/rpc/eth/validator/BUILD.bazel
index 915cb4a498..fcefa14507 100644
--- a/beacon-chain/rpc/eth/validator/BUILD.bazel
+++ b/beacon-chain/rpc/eth/validator/BUILD.bazel
@@ -31,6 +31,7 @@ go_library(
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/primitives:go_default_library",
+        "//consensus-types/validator:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//network/http:go_default_library",
         "//proto/eth/v1:go_default_library",
diff --git a/beacon-chain/rpc/eth/validator/handlers.go b/beacon-chain/rpc/eth/validator/handlers.go
index d9fbbd8636..b67d65397f 100644
--- a/beacon-chain/rpc/eth/validator/handlers.go
+++ b/beacon-chain/rpc/eth/validator/handlers.go
@@ -3,20 +3,33 @@ package validator
 import (
 	"bytes"
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"strconv"
+	"time"
 
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/go-playground/validator/v10"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/core"
+	rpchelpers "github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/helpers"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/shared"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
+	validator2 "github.com/prysmaticlabs/prysm/v4/consensus-types/validator"
 	http2 "github.com/prysmaticlabs/prysm/v4/network/http"
+	ethpbv1 "github.com/prysmaticlabs/prysm/v4/proto/eth/v1"
 	ethpbalpha "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v4/time/slots"
+	"go.opencensus.io/trace"
 )
 
 // GetAggregateAttestation aggregates all attestations matching the given attestation data root and slot, returning the aggregated result.
 func (s *Server) GetAggregateAttestation(w http.ResponseWriter, r *http.Request) {
+	ctx, span := trace.StartSpan(r.Context(), "validator.GetAggregateAttestation")
+	defer span.End()
+
 	attDataRoot := r.URL.Query().Get("attestation_data_root")
 	valid := shared.ValidateHex(w, "Attestation data root", attDataRoot)
 	if !valid {
@@ -28,7 +41,7 @@ func (s *Server) GetAggregateAttestation(w http.ResponseWriter, r *http.Request)
 		return
 	}
 
-	if err := s.AttestationsPool.AggregateUnaggregatedAttestations(r.Context()); err != nil {
+	if err := s.AttestationsPool.AggregateUnaggregatedAttestations(ctx); err != nil {
 		http2.HandleError(w, "Could not aggregate unaggregated attestations: "+err.Error(), http.StatusBadRequest)
 		return
 	}
@@ -82,17 +95,22 @@ func (s *Server) GetAggregateAttestation(w http.ResponseWriter, r *http.Request)
 
 // SubmitContributionAndProofs publishes multiple signed sync committee contribution and proofs.
 func (s *Server) SubmitContributionAndProofs(w http.ResponseWriter, r *http.Request) {
+	ctx, span := trace.StartSpan(r.Context(), "validator.SubmitContributionAndProofs")
+	defer span.End()
+
 	if r.Body == http.NoBody {
 		http2.HandleError(w, "No data submitted", http.StatusBadRequest)
 		return
 	}
-
 	var req SubmitContributionAndProofsRequest
 	if err := json.NewDecoder(r.Body).Decode(&req.Data); err != nil {
 		http2.HandleError(w, "Could not decode request body: "+err.Error(), http.StatusBadRequest)
 		return
 	}
-
+	if len(req.Data) == 0 {
+		http2.HandleError(w, "No data submitted", http.StatusBadRequest)
+		return
+	}
 	validate := validator.New()
 	if err := validate.Struct(req); err != nil {
 		http2.HandleError(w, err.Error(), http.StatusBadRequest)
@@ -105,7 +123,7 @@ func (s *Server) SubmitContributionAndProofs(w http.ResponseWriter, r *http.Requ
 			http2.HandleError(w, "Could not convert request contribution to consensus contribution: "+err.Error(), http.StatusBadRequest)
 			return
 		}
-		rpcError := s.CoreService.SubmitSignedContributionAndProof(r.Context(), consensusItem)
+		rpcError := s.CoreService.SubmitSignedContributionAndProof(ctx, consensusItem)
 		if rpcError != nil {
 			http2.HandleError(w, rpcError.Err.Error(), core.ErrorReasonToHTTP(rpcError.Reason))
 		}
@@ -114,17 +132,22 @@ func (s *Server) SubmitContributionAndProofs(w http.ResponseWriter, r *http.Requ
 
 // SubmitAggregateAndProofs verifies given aggregate and proofs and publishes them on appropriate gossipsub topic.
 func (s *Server) SubmitAggregateAndProofs(w http.ResponseWriter, r *http.Request) {
+	ctx, span := trace.StartSpan(r.Context(), "validator.SubmitAggregateAndProofs")
+	defer span.End()
+
 	if r.Body == http.NoBody {
 		http2.HandleError(w, "No data submitted", http.StatusBadRequest)
 		return
 	}
-
 	var req SubmitAggregateAndProofsRequest
 	if err := json.NewDecoder(r.Body).Decode(&req.Data); err != nil {
 		http2.HandleError(w, "Could not decode request body: "+err.Error(), http.StatusBadRequest)
 		return
 	}
-
+	if len(req.Data) == 0 {
+		http2.HandleError(w, "No data submitted", http.StatusBadRequest)
+		return
+	}
 	validate := validator.New()
 	if err := validate.Struct(req); err != nil {
 		http2.HandleError(w, err.Error(), http.StatusBadRequest)
@@ -139,7 +162,7 @@ func (s *Server) SubmitAggregateAndProofs(w http.ResponseWriter, r *http.Request
 			return
 		}
 		rpcError := s.CoreService.SubmitSignedAggregateSelectionProof(
-			r.Context(),
+			ctx,
 			&ethpbalpha.SignedAggregateSubmitRequest{SignedAggregateAndProof: consensusItem},
 		)
 		if rpcError != nil {
@@ -157,3 +180,120 @@ func (s *Server) SubmitAggregateAndProofs(w http.ResponseWriter, r *http.Request
 		http2.HandleError(w, "Could not broadcast one or more signed aggregated attestations", http.StatusInternalServerError)
 	}
 }
+
+// SubmitSyncCommitteeSubscription subscribe to a number of sync committee subnets.
+//
+// Subscribing to sync committee subnets is an action performed by VC to enable
+// network participation, and only required if the VC has an active
+// validator in an active sync committee.
+func (s *Server) SubmitSyncCommitteeSubscription(w http.ResponseWriter, r *http.Request) {
+	ctx, span := trace.StartSpan(r.Context(), "validator.SubmitSyncCommitteeSubscription")
+	defer span.End()
+
+	if shared.IsSyncing(ctx, w, s.SyncChecker, s.HeadFetcher, s.TimeFetcher, s.OptimisticModeFetcher) {
+		return
+	}
+
+	if r.Body == http.NoBody {
+		http2.HandleError(w, "No data submitted", http.StatusBadRequest)
+		return
+	}
+	var req SubmitSyncCommitteeSubscriptionsRequest
+	if err := json.NewDecoder(r.Body).Decode(&req.Data); err != nil {
+		http2.HandleError(w, "Could not decode request body: "+err.Error(), http.StatusBadRequest)
+		return
+	}
+	if len(req.Data) == 0 {
+		http2.HandleError(w, "No data submitted", http.StatusBadRequest)
+		return
+	}
+	validate := validator.New()
+	if err := validate.Struct(req); err != nil {
+		http2.HandleError(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	st, err := s.HeadFetcher.HeadStateReadOnly(ctx)
+	if err != nil {
+		http2.HandleError(w, "Could not get head state: "+err.Error(), http.StatusInternalServerError)
+		return
+	}
+	currEpoch := slots.ToEpoch(st.Slot())
+	validators := make([]state.ReadOnlyValidator, len(req.Data))
+	subscriptions := make([]*validator2.SyncCommitteeSubscription, len(req.Data))
+	for i, item := range req.Data {
+		consensusItem, err := item.ToConsensus()
+		if err != nil {
+			http2.HandleError(w, "Could not convert request subscription to consensus subscription: "+err.Error(), http.StatusBadRequest)
+			return
+		}
+		subscriptions[i] = consensusItem
+		val, err := st.ValidatorAtIndexReadOnly(consensusItem.ValidatorIndex)
+		if err != nil {
+			http2.HandleError(
+				w,
+				fmt.Sprintf("Could not get validator at index %d: %s", consensusItem.ValidatorIndex, err.Error()),
+				http.StatusInternalServerError,
+			)
+			return
+		}
+		valStatus, err := rpchelpers.ValidatorSubStatus(val, currEpoch)
+		if err != nil {
+			http2.HandleError(
+				w,
+				fmt.Sprintf("Could not get validator status at index %d: %s", consensusItem.ValidatorIndex, err.Error()),
+				http.StatusInternalServerError,
+			)
+			return
+		}
+		if valStatus != ethpbv1.ValidatorStatus_ACTIVE_ONGOING && valStatus != ethpbv1.ValidatorStatus_ACTIVE_EXITING {
+			http2.HandleError(
+				w,
+				fmt.Sprintf("Validator at index %d is not active or exiting", consensusItem.ValidatorIndex),
+				http.StatusBadRequest,
+			)
+			return
+		}
+		validators[i] = val
+	}
+
+	startEpoch, err := slots.SyncCommitteePeriodStartEpoch(currEpoch)
+	if err != nil {
+		http2.HandleError(w, "Could not get sync committee period start epoch: "+err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	for i, sub := range subscriptions {
+		if sub.UntilEpoch <= currEpoch {
+			http2.HandleError(
+				w,
+				fmt.Sprintf("Epoch for subscription at index %d is in the past. It must be at least %d", i, currEpoch+1),
+				http.StatusBadRequest,
+			)
+			return
+		}
+		maxValidUntilEpoch := startEpoch + params.BeaconConfig().EpochsPerSyncCommitteePeriod*2
+		if sub.UntilEpoch > maxValidUntilEpoch {
+			http2.HandleError(
+				w,
+				fmt.Sprintf("Epoch for subscription at index %d is too far in the future. It can be at most %d", i, maxValidUntilEpoch),
+				http.StatusBadRequest,
+			)
+			return
+		}
+	}
+
+	for i, sub := range subscriptions {
+		pubkey48 := validators[i].PublicKey()
+		// Handle overflow in the event current epoch is less than end epoch.
+		// This is an impossible condition, so it is a defensive check.
+		epochsToWatch, err := sub.UntilEpoch.SafeSub(uint64(startEpoch))
+		if err != nil {
+			epochsToWatch = 0
+		}
+		epochDuration := time.Duration(params.BeaconConfig().SlotsPerEpoch.Mul(params.BeaconConfig().SecondsPerSlot)) * time.Second
+		totalDuration := epochDuration * time.Duration(epochsToWatch)
+
+		cache.SyncSubnetIDs.AddSyncCommitteeSubnets(pubkey48[:], startEpoch, sub.SyncCommitteeIndices, totalDuration)
+	}
+}
diff --git a/beacon-chain/rpc/eth/validator/handlers_test.go b/beacon-chain/rpc/eth/validator/handlers_test.go
index 72b835ee8f..ecdc295951 100644
--- a/beacon-chain/rpc/eth/validator/handlers_test.go
+++ b/beacon-chain/rpc/eth/validator/handlers_test.go
@@ -2,7 +2,9 @@ package validator
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"strings"
@@ -10,17 +12,22 @@ import (
 
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	mockChain "github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain/testing"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/attestations"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/operations/synccommittee"
 	p2pmock "github.com/prysmaticlabs/prysm/v4/beacon-chain/p2p/testing"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/core"
+	mockSync "github.com/prysmaticlabs/prysm/v4/beacon-chain/sync/initial-sync/testing"
 	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
+	"github.com/prysmaticlabs/prysm/v4/config/params"
+	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v4/crypto/bls"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
 	http2 "github.com/prysmaticlabs/prysm/v4/network/http"
 	ethpbalpha "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v4/testing/assert"
 	"github.com/prysmaticlabs/prysm/v4/testing/require"
+	"github.com/prysmaticlabs/prysm/v4/testing/util"
 )
 
 func TestGetAggregateAttestation(t *testing.T) {
@@ -313,7 +320,6 @@ func TestSubmitContributionAndProofs(t *testing.T) {
 		require.NoError(t, err)
 		assert.Equal(t, 1, len(contributions))
 	})
-
 	t.Run("multiple", func(t *testing.T) {
 		broadcaster := &p2pmock.MockBroadcaster{}
 		c.Broadcaster = broadcaster
@@ -333,7 +339,35 @@ func TestSubmitContributionAndProofs(t *testing.T) {
 		require.NoError(t, err)
 		assert.Equal(t, 2, len(contributions))
 	})
+	t.Run("no body", func(t *testing.T) {
+		s.SyncCommitteePool = synccommittee.NewStore()
 
+		request := httptest.NewRequest(http.MethodPost, "http://example.com", nil)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+
+		s.SubmitContributionAndProofs(writer, request)
+		assert.Equal(t, http.StatusBadRequest, writer.Code)
+		e := &http2.DefaultErrorJson{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
+		assert.Equal(t, http.StatusBadRequest, e.Code)
+		assert.Equal(t, true, strings.Contains(e.Message, "No data submitted"))
+	})
+	t.Run("empty", func(t *testing.T) {
+		var body bytes.Buffer
+		_, err := body.WriteString("[]")
+		require.NoError(t, err)
+		request := httptest.NewRequest(http.MethodPost, "http://example.com", &body)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+
+		s.SubmitContributionAndProofs(writer, request)
+		assert.Equal(t, http.StatusBadRequest, writer.Code)
+		e := &http2.DefaultErrorJson{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
+		assert.Equal(t, http.StatusBadRequest, e.Code)
+		assert.Equal(t, true, strings.Contains(e.Message, "No data submitted"))
+	})
 	t.Run("invalid", func(t *testing.T) {
 		c.SyncCommitteePool = synccommittee.NewStore()
 
@@ -391,7 +425,6 @@ func TestSubmitAggregateAndProofs(t *testing.T) {
 		assert.Equal(t, http.StatusOK, writer.Code)
 		assert.Equal(t, 1, len(broadcaster.BroadcastMessages))
 	})
-
 	t.Run("multiple", func(t *testing.T) {
 		broadcaster := &p2pmock.MockBroadcaster{}
 		c.Broadcaster = broadcaster
@@ -408,7 +441,33 @@ func TestSubmitAggregateAndProofs(t *testing.T) {
 		assert.Equal(t, http.StatusOK, writer.Code)
 		assert.Equal(t, 2, len(broadcaster.BroadcastMessages))
 	})
+	t.Run("no body", func(t *testing.T) {
+		request := httptest.NewRequest(http.MethodPost, "http://example.com", nil)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
 
+		s.SubmitAggregateAndProofs(writer, request)
+		assert.Equal(t, http.StatusBadRequest, writer.Code)
+		e := &http2.DefaultErrorJson{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
+		assert.Equal(t, http.StatusBadRequest, e.Code)
+		assert.Equal(t, true, strings.Contains(e.Message, "No data submitted"))
+	})
+	t.Run("empty", func(t *testing.T) {
+		var body bytes.Buffer
+		_, err := body.WriteString("[]")
+		require.NoError(t, err)
+		request := httptest.NewRequest(http.MethodPost, "http://example.com", &body)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+
+		s.SubmitAggregateAndProofs(writer, request)
+		assert.Equal(t, http.StatusBadRequest, writer.Code)
+		e := &http2.DefaultErrorJson{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
+		assert.Equal(t, http.StatusBadRequest, e.Code)
+		assert.Equal(t, true, strings.Contains(e.Message, "No data submitted"))
+	})
 	t.Run("invalid", func(t *testing.T) {
 		var body bytes.Buffer
 		_, err := body.WriteString(invalidAggregate)
@@ -423,22 +482,179 @@ func TestSubmitAggregateAndProofs(t *testing.T) {
 		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
 		assert.Equal(t, http.StatusBadRequest, e.Code)
 	})
+}
 
+func TestSubmitSyncCommitteeSubscription(t *testing.T) {
+	genesis := util.NewBeaconBlock()
+	deposits, _, err := util.DeterministicDepositsAndKeys(64)
+	require.NoError(t, err)
+	eth1Data, err := util.DeterministicEth1Data(len(deposits))
+	require.NoError(t, err)
+	bs, err := util.GenesisBeaconState(context.Background(), deposits, 0, eth1Data)
+	require.NoError(t, err, "Could not set up genesis state")
+	genesisRoot, err := genesis.Block.HashTreeRoot()
+	require.NoError(t, err, "Could not get signing root")
+	roots := make([][]byte, fieldparams.BlockRootsLength)
+	roots[0] = genesisRoot[:]
+	require.NoError(t, bs.SetBlockRoots(roots))
+
+	pubkeys := make([][]byte, len(deposits))
+	for i := 0; i < len(deposits); i++ {
+		pubkeys[i] = deposits[i].Data.PublicKey
+	}
+
+	chainSlot := primitives.Slot(0)
+	chain := &mockChain.ChainService{
+		State: bs, Root: genesisRoot[:], Slot: &chainSlot,
+	}
+	s := &Server{
+		HeadFetcher: chain,
+		SyncChecker: &mockSync.Sync{IsSyncing: false},
+	}
+
+	t.Run("single", func(t *testing.T) {
+		cache.SyncSubnetIDs.EmptyAllCaches()
+
+		var body bytes.Buffer
+		_, err := body.WriteString(singleSyncCommitteeSubscription)
+		require.NoError(t, err)
+		request := httptest.NewRequest(http.MethodPost, "http://example.com", &body)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+
+		s.SubmitSyncCommitteeSubscription(writer, request)
+		assert.Equal(t, http.StatusOK, writer.Code)
+		subnets, _, _, _ := cache.SyncSubnetIDs.GetSyncCommitteeSubnets(pubkeys[1], 0)
+		require.Equal(t, 2, len(subnets))
+		assert.Equal(t, uint64(0), subnets[0])
+		assert.Equal(t, uint64(2), subnets[1])
+	})
+	t.Run("multiple", func(t *testing.T) {
+		cache.SyncSubnetIDs.EmptyAllCaches()
+
+		var body bytes.Buffer
+		_, err := body.WriteString(multipleSyncCommitteeSubscription)
+		require.NoError(t, err)
+		request := httptest.NewRequest(http.MethodPost, "http://example.com", &body)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+
+		s.SubmitSyncCommitteeSubscription(writer, request)
+		assert.Equal(t, http.StatusOK, writer.Code)
+		subnets, _, _, _ := cache.SyncSubnetIDs.GetSyncCommitteeSubnets(pubkeys[0], 0)
+		require.Equal(t, 1, len(subnets))
+		assert.Equal(t, uint64(0), subnets[0])
+		subnets, _, _, _ = cache.SyncSubnetIDs.GetSyncCommitteeSubnets(pubkeys[1], 0)
+		require.Equal(t, 1, len(subnets))
+		assert.Equal(t, uint64(2), subnets[0])
+	})
 	t.Run("no body", func(t *testing.T) {
 		request := httptest.NewRequest(http.MethodPost, "http://example.com", nil)
 		writer := httptest.NewRecorder()
 		writer.Body = &bytes.Buffer{}
 
-		s.SubmitAggregateAndProofs(writer, request)
+		s.SubmitSyncCommitteeSubscription(writer, request)
 		assert.Equal(t, http.StatusBadRequest, writer.Code)
 		e := &http2.DefaultErrorJson{}
 		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
 		assert.Equal(t, http.StatusBadRequest, e.Code)
 		assert.Equal(t, true, strings.Contains(e.Message, "No data submitted"))
 	})
+	t.Run("empty", func(t *testing.T) {
+		var body bytes.Buffer
+		_, err := body.WriteString("[]")
+		require.NoError(t, err)
+		request := httptest.NewRequest(http.MethodPost, "http://example.com", &body)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+
+		s.SubmitSyncCommitteeSubscription(writer, request)
+		assert.Equal(t, http.StatusBadRequest, writer.Code)
+		e := &http2.DefaultErrorJson{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
+		assert.Equal(t, http.StatusBadRequest, e.Code)
+		assert.Equal(t, true, strings.Contains(e.Message, "No data submitted"))
+	})
+	t.Run("invalid", func(t *testing.T) {
+		var body bytes.Buffer
+		_, err := body.WriteString(invalidSyncCommitteeSubscription)
+		require.NoError(t, err)
+		request := httptest.NewRequest(http.MethodPost, "http://example.com", &body)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+
+		s.SubmitSyncCommitteeSubscription(writer, request)
+		assert.Equal(t, http.StatusBadRequest, writer.Code)
+		e := &http2.DefaultErrorJson{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
+		assert.Equal(t, http.StatusBadRequest, e.Code)
+	})
+	t.Run("epoch in the past", func(t *testing.T) {
+		var body bytes.Buffer
+		_, err := body.WriteString(singleSyncCommitteeSubscription2)
+		require.NoError(t, err)
+		request := httptest.NewRequest(http.MethodPost, "http://example.com", &body)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+
+		s.SubmitSyncCommitteeSubscription(writer, request)
+		assert.Equal(t, http.StatusBadRequest, writer.Code)
+		e := &http2.DefaultErrorJson{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
+		assert.Equal(t, http.StatusBadRequest, e.Code)
+		assert.Equal(t, true, strings.Contains(e.Message, "Epoch for subscription at index 0 is in the past"))
+	})
+	t.Run("first epoch after the next sync committee is valid", func(t *testing.T) {
+		var body bytes.Buffer
+		_, err := body.WriteString(singleSyncCommitteeSubscription3)
+		require.NoError(t, err)
+		request := httptest.NewRequest(http.MethodPost, "http://example.com", &body)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+
+		s.SubmitSyncCommitteeSubscription(writer, request)
+		assert.Equal(t, http.StatusOK, writer.Code)
+	})
+	t.Run("epoch too far in the future", func(t *testing.T) {
+		var body bytes.Buffer
+		_, err := body.WriteString(singleSyncCommitteeSubscription4)
+		require.NoError(t, err)
+		request := httptest.NewRequest(http.MethodPost, "http://example.com", &body)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+
+		s.SubmitSyncCommitteeSubscription(writer, request)
+		assert.Equal(t, http.StatusBadRequest, writer.Code)
+		e := &http2.DefaultErrorJson{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
+		assert.Equal(t, http.StatusBadRequest, e.Code)
+		assert.Equal(t, true, strings.Contains(e.Message, "Epoch for subscription at index 0 is too far in the future"))
+	})
+	t.Run("sync not ready", func(t *testing.T) {
+		st, err := util.NewBeaconState()
+		require.NoError(t, err)
+		chainService := &mockChain.ChainService{State: st}
+		s := &Server{
+			SyncChecker:           &mockSync.Sync{IsSyncing: true},
+			HeadFetcher:           chainService,
+			TimeFetcher:           chainService,
+			OptimisticModeFetcher: chainService,
+		}
+
+		request := httptest.NewRequest(http.MethodPost, "http://example.com", nil)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+
+		s.SubmitSyncCommitteeSubscription(writer, request)
+		assert.Equal(t, http.StatusServiceUnavailable, writer.Code)
+		e := &http2.DefaultErrorJson{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
+		assert.Equal(t, http.StatusServiceUnavailable, e.Code)
+		assert.Equal(t, true, strings.Contains(e.Message, "Beacon node is currently syncing"))
+	})
 }
 
-const (
+var (
 	singleContribution = `[
   {
     "message": {
@@ -605,5 +821,72 @@ const (
     },
     "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
   }
+]`
+	singleSyncCommitteeSubscription = `[
+  {
+    "validator_index": "1",
+    "sync_committee_indices": [
+      "0",
+      "2"
+    ],
+    "until_epoch": "1"
+  }
+]`
+	singleSyncCommitteeSubscription2 = `[
+  {
+    "validator_index": "0",
+    "sync_committee_indices": [
+      "0",
+      "2"
+    ],
+    "until_epoch": "0"
+  }
+]`
+	singleSyncCommitteeSubscription3 = fmt.Sprintf(`[
+  {
+    "validator_index": "0",
+    "sync_committee_indices": [
+      "0",
+      "2"
+    ],
+    "until_epoch": "%d"
+  }
+]`, 2*params.BeaconConfig().EpochsPerSyncCommitteePeriod)
+	singleSyncCommitteeSubscription4 = fmt.Sprintf(`[
+  {
+    "validator_index": "0",
+    "sync_committee_indices": [
+      "0",
+      "2"
+    ],
+    "until_epoch": "%d"
+  }
+]`, 2*params.BeaconConfig().EpochsPerSyncCommitteePeriod+1)
+	multipleSyncCommitteeSubscription = `[
+  {
+    "validator_index": "0",
+    "sync_committee_indices": [
+      "0"
+    ],
+    "until_epoch": "1"
+  },
+  {
+    "validator_index": "1",
+    "sync_committee_indices": [
+      "2"
+    ],
+    "until_epoch": "1"
+  }
+]`
+	// validator_index is invalid
+	invalidSyncCommitteeSubscription = `[
+  {
+    "validator_index": "foo",
+    "sync_committee_indices": [
+      "0",
+      "2"
+    ],
+    "until_epoch": "1"
+  }
 ]`
 )
diff --git a/beacon-chain/rpc/eth/validator/structs.go b/beacon-chain/rpc/eth/validator/structs.go
index 96f6e652e0..17bbd35a87 100644
--- a/beacon-chain/rpc/eth/validator/structs.go
+++ b/beacon-chain/rpc/eth/validator/structs.go
@@ -7,9 +7,13 @@ type AggregateAttestationResponse struct {
 }
 
 type SubmitContributionAndProofsRequest struct {
-	Data []*shared.SignedContributionAndProof `json:"data" validate:"required"`
+	Data []*shared.SignedContributionAndProof `json:"data" validate:"required,dive"`
 }
 
 type SubmitAggregateAndProofsRequest struct {
-	Data []*shared.SignedAggregateAttestationAndProof `json:"data" validate:"required"`
+	Data []*shared.SignedAggregateAttestationAndProof `json:"data" validate:"required,dive"`
+}
+
+type SubmitSyncCommitteeSubscriptionsRequest struct {
+	Data []*shared.SyncCommitteeSubscription `json:"data" validate:"required,dive"`
 }
diff --git a/beacon-chain/rpc/eth/validator/validator.go b/beacon-chain/rpc/eth/validator/validator.go
index 37653b569c..dd9fdd93fd 100644
--- a/beacon-chain/rpc/eth/validator/validator.go
+++ b/beacon-chain/rpc/eth/validator/validator.go
@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"sort"
 	"strconv"
-	"time"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
@@ -881,81 +880,6 @@ func (vs *Server) SubmitBeaconCommitteeSubscription(ctx context.Context, req *et
 	return &emptypb.Empty{}, nil
 }
 
-// SubmitSyncCommitteeSubscription subscribe to a number of sync committee subnets.
-//
-// Subscribing to sync committee subnets is an action performed by VC to enable
-// network participation in Altair networks, and only required if the VC has an active
-// validator in an active sync committee.
-func (vs *Server) SubmitSyncCommitteeSubscription(ctx context.Context, req *ethpbv2.SubmitSyncCommitteeSubscriptionsRequest) (*empty.Empty, error) {
-	ctx, span := trace.StartSpan(ctx, "validator.SubmitSyncCommitteeSubscription")
-	defer span.End()
-
-	if err := rpchelpers.ValidateSyncGRPC(ctx, vs.SyncChecker, vs.HeadFetcher, vs.TimeFetcher, vs.OptimisticModeFetcher); err != nil {
-		// We simply return the error because it's already a gRPC error.
-		return nil, err
-	}
-
-	if len(req.Data) == 0 {
-		return nil, status.Error(codes.InvalidArgument, "No subscriptions provided")
-	}
-	s, err := vs.HeadFetcher.HeadStateReadOnly(ctx)
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "Could not get head state: %v", err)
-	}
-	currEpoch := slots.ToEpoch(s.Slot())
-	validators := make([]state.ReadOnlyValidator, len(req.Data))
-	for i, sub := range req.Data {
-		val, err := s.ValidatorAtIndexReadOnly(sub.ValidatorIndex)
-		if err != nil {
-			return nil, status.Errorf(codes.Internal, "Could not get validator at index %d: %v", sub.ValidatorIndex, err)
-		}
-		valStatus, err := rpchelpers.ValidatorSubStatus(val, currEpoch)
-		if err != nil {
-			return nil, status.Errorf(codes.Internal, "Could not get validator status at index %d: %v", sub.ValidatorIndex, err)
-		}
-		if valStatus != ethpbv1.ValidatorStatus_ACTIVE_ONGOING && valStatus != ethpbv1.ValidatorStatus_ACTIVE_EXITING {
-			return nil, status.Errorf(codes.InvalidArgument, "Validator at index %d is not active or exiting: %v", sub.ValidatorIndex, err)
-		}
-		validators[i] = val
-	}
-
-	startEpoch, err := slots.SyncCommitteePeriodStartEpoch(currEpoch)
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "Could not get sync committee period start epoch: %v.", err)
-	}
-
-	for i, sub := range req.Data {
-		if sub.UntilEpoch <= currEpoch {
-			return nil, status.Errorf(codes.InvalidArgument, "Epoch for subscription at index %d is in the past. It must be at least %d", i, currEpoch+1)
-		}
-		maxValidUntilEpoch := startEpoch + params.BeaconConfig().EpochsPerSyncCommitteePeriod*2
-		if sub.UntilEpoch > maxValidUntilEpoch {
-			return nil, status.Errorf(
-				codes.InvalidArgument,
-				"Epoch for subscription at index %d is too far in the future. It can be at most %d",
-				i,
-				maxValidUntilEpoch,
-			)
-		}
-	}
-
-	for i, sub := range req.Data {
-		pubkey48 := validators[i].PublicKey()
-		// Handle overflow in the event current epoch is less than end epoch.
-		// This is an impossible condition, so it is a defensive check.
-		epochsToWatch, err := sub.UntilEpoch.SafeSub(uint64(startEpoch))
-		if err != nil {
-			epochsToWatch = 0
-		}
-		epochDuration := time.Duration(params.BeaconConfig().SlotsPerEpoch.Mul(params.BeaconConfig().SecondsPerSlot)) * time.Second
-		totalDuration := epochDuration * time.Duration(epochsToWatch)
-
-		cache.SyncSubnetIDs.AddSyncCommitteeSubnets(pubkey48[:], startEpoch, sub.SyncCommitteeIndices, totalDuration)
-	}
-
-	return &empty.Empty{}, nil
-}
-
 // ProduceSyncCommitteeContribution requests that the beacon node produce a sync committee contribution.
 func (vs *Server) ProduceSyncCommitteeContribution(
 	ctx context.Context,
diff --git a/beacon-chain/rpc/eth/validator/validator_test.go b/beacon-chain/rpc/eth/validator/validator_test.go
index 5dc1df04da..ae0762cff5 100644
--- a/beacon-chain/rpc/eth/validator/validator_test.go
+++ b/beacon-chain/rpc/eth/validator/validator_test.go
@@ -1450,165 +1450,6 @@ func TestSubmitBeaconCommitteeSubscription_SyncNotReady(t *testing.T) {
 	assert.ErrorContains(t, "Syncing to latest head, not ready to respond", err)
 }
 
-func TestSubmitSyncCommitteeSubscription(t *testing.T) {
-	ctx := context.Background()
-	genesis := util.NewBeaconBlock()
-	deposits, _, err := util.DeterministicDepositsAndKeys(64)
-	require.NoError(t, err)
-	eth1Data, err := util.DeterministicEth1Data(len(deposits))
-	require.NoError(t, err)
-	bs, err := util.GenesisBeaconState(context.Background(), deposits, 0, eth1Data)
-	require.NoError(t, err, "Could not set up genesis state")
-	genesisRoot, err := genesis.Block.HashTreeRoot()
-	require.NoError(t, err, "Could not get signing root")
-	roots := make([][]byte, fieldparams.BlockRootsLength)
-	roots[0] = genesisRoot[:]
-	require.NoError(t, bs.SetBlockRoots(roots))
-
-	pubkeys := make([][]byte, len(deposits))
-	for i := 0; i < len(deposits); i++ {
-		pubkeys[i] = deposits[i].Data.PublicKey
-	}
-
-	chainSlot := primitives.Slot(0)
-	chain := &mockChain.ChainService{
-		State: bs, Root: genesisRoot[:], Slot: &chainSlot,
-	}
-	vs := &Server{
-		HeadFetcher:    chain,
-		TimeFetcher:    chain,
-		SyncChecker:    &mockSync.Sync{IsSyncing: false},
-		V1Alpha1Server: &v1alpha1validator.Server{},
-	}
-
-	t.Run("Single subscription", func(t *testing.T) {
-		cache.SyncSubnetIDs.EmptyAllCaches()
-		req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
-			Data: []*ethpbv2.SyncCommitteeSubscription{
-				{
-					ValidatorIndex:       0,
-					SyncCommitteeIndices: []uint64{0, 2},
-					UntilEpoch:           1,
-				},
-			},
-		}
-		_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
-		require.NoError(t, err)
-		subnets, _, _, _ := cache.SyncSubnetIDs.GetSyncCommitteeSubnets(pubkeys[0], 0)
-		require.Equal(t, 2, len(subnets))
-		assert.Equal(t, uint64(0), subnets[0])
-		assert.Equal(t, uint64(2), subnets[1])
-	})
-
-	t.Run("Multiple subscriptions", func(t *testing.T) {
-		cache.SyncSubnetIDs.EmptyAllCaches()
-		req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
-			Data: []*ethpbv2.SyncCommitteeSubscription{
-				{
-					ValidatorIndex:       0,
-					SyncCommitteeIndices: []uint64{0},
-					UntilEpoch:           1,
-				},
-				{
-					ValidatorIndex:       1,
-					SyncCommitteeIndices: []uint64{2},
-					UntilEpoch:           1,
-				},
-			},
-		}
-		_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
-		require.NoError(t, err)
-		subnets, _, _, _ := cache.SyncSubnetIDs.GetSyncCommitteeSubnets(pubkeys[0], 0)
-		require.Equal(t, 1, len(subnets))
-		assert.Equal(t, uint64(0), subnets[0])
-		subnets, _, _, _ = cache.SyncSubnetIDs.GetSyncCommitteeSubnets(pubkeys[1], 0)
-		require.Equal(t, 1, len(subnets))
-		assert.Equal(t, uint64(2), subnets[0])
-	})
-
-	t.Run("No subscriptions", func(t *testing.T) {
-		req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
-			Data: make([]*ethpbv2.SyncCommitteeSubscription, 0),
-		}
-		_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
-		require.NotNil(t, err)
-		assert.ErrorContains(t, "No subscriptions provided", err)
-	})
-
-	t.Run("Invalid validator index", func(t *testing.T) {
-		req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
-			Data: []*ethpbv2.SyncCommitteeSubscription{
-				{
-					ValidatorIndex:       99,
-					SyncCommitteeIndices: []uint64{},
-					UntilEpoch:           1,
-				},
-			},
-		}
-		_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
-		require.NotNil(t, err)
-		assert.ErrorContains(t, "Could not get validator at index 99", err)
-	})
-
-	t.Run("Epoch in the past", func(t *testing.T) {
-		req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
-			Data: []*ethpbv2.SyncCommitteeSubscription{
-				{
-					ValidatorIndex:       0,
-					SyncCommitteeIndices: []uint64{},
-					UntilEpoch:           0,
-				},
-			},
-		}
-		_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
-		require.NotNil(t, err)
-		assert.ErrorContains(t, "Epoch for subscription at index 0 is in the past", err)
-	})
-
-	t.Run("First epoch after the next sync committee is valid", func(t *testing.T) {
-		req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
-			Data: []*ethpbv2.SyncCommitteeSubscription{
-				{
-					ValidatorIndex:       0,
-					SyncCommitteeIndices: []uint64{},
-					UntilEpoch:           2 * params.BeaconConfig().EpochsPerSyncCommitteePeriod,
-				},
-			},
-		}
-		_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
-		require.NoError(t, err)
-	})
-
-	t.Run("Epoch too far in the future", func(t *testing.T) {
-		req := &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{
-			Data: []*ethpbv2.SyncCommitteeSubscription{
-				{
-					ValidatorIndex:       0,
-					SyncCommitteeIndices: []uint64{},
-					UntilEpoch:           2*params.BeaconConfig().EpochsPerSyncCommitteePeriod + 1,
-				},
-			},
-		}
-		_, err = vs.SubmitSyncCommitteeSubscription(ctx, req)
-		require.NotNil(t, err)
-		assert.ErrorContains(t, "Epoch for subscription at index 0 is too far in the future", err)
-	})
-}
-
-func TestSubmitSyncCommitteeSubscription_SyncNotReady(t *testing.T) {
-	st, err := util.NewBeaconState()
-	require.NoError(t, err)
-	chainService := &mockChain.ChainService{State: st}
-	vs := &Server{
-		SyncChecker:           &mockSync.Sync{IsSyncing: true},
-		HeadFetcher:           chainService,
-		TimeFetcher:           chainService,
-		OptimisticModeFetcher: chainService,
-	}
-	_, err = vs.SubmitSyncCommitteeSubscription(context.Background(), &ethpbv2.SubmitSyncCommitteeSubscriptionsRequest{})
-	assert.ErrorContains(t, "Syncing to latest head, not ready to respond", err)
-}
-
 func TestProduceSyncCommitteeContribution(t *testing.T) {
 	ctx := context.Background()
 	root := bytesutil.PadTo([]byte("root"), 32)
diff --git a/beacon-chain/rpc/service.go b/beacon-chain/rpc/service.go
index 0080552b3c..099f232b86 100644
--- a/beacon-chain/rpc/service.go
+++ b/beacon-chain/rpc/service.go
@@ -300,6 +300,7 @@ func (s *Service) Start() {
 	s.cfg.Router.HandleFunc("/eth/v1/validator/aggregate_attestation", validatorServerV1.GetAggregateAttestation).Methods(http.MethodGet)
 	s.cfg.Router.HandleFunc("/eth/v1/validator/contribution_and_proofs", validatorServerV1.SubmitContributionAndProofs).Methods(http.MethodPost)
 	s.cfg.Router.HandleFunc("/eth/v1/validator/aggregate_and_proofs", validatorServerV1.SubmitAggregateAndProofs).Methods(http.MethodPost)
+	s.cfg.Router.HandleFunc("/eth/v1/validator/sync_committee_subscriptions", validatorServerV1.SubmitSyncCommitteeSubscription).Methods(http.MethodPost)
 
 	nodeServer := &nodev1alpha1.Server{
 		LogsStreamer:         logs.NewStreamServer(),
diff --git a/consensus-types/validator/BUILD.bazel b/consensus-types/validator/BUILD.bazel
index 0ad6984336..59e0b67c27 100644
--- a/consensus-types/validator/BUILD.bazel
+++ b/consensus-types/validator/BUILD.bazel
@@ -2,9 +2,13 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 
 go_library(
     name = "go_default_library",
-    srcs = ["custom_types.go"],
+    srcs = [
+        "custom_types.go",
+        "types.go",
+    ],
     importpath = "github.com/prysmaticlabs/prysm/v4/consensus-types/validator",
     visibility = ["//visibility:public"],
+    deps = ["//consensus-types/primitives:go_default_library"],
 )
 
 go_test(
diff --git a/consensus-types/validator/types.go b/consensus-types/validator/types.go
new file mode 100644
index 0000000000..8a04b8a6de
--- /dev/null
+++ b/consensus-types/validator/types.go
@@ -0,0 +1,11 @@
+package validator
+
+import (
+	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
+)
+
+type SyncCommitteeSubscription struct {
+	ValidatorIndex       primitives.ValidatorIndex
+	SyncCommitteeIndices []uint64
+	UntilEpoch           primitives.Epoch
+}
diff --git a/proto/eth/service/validator_service.pb.go b/proto/eth/service/validator_service.pb.go
index 7deb39451a..9f4ebeda66 100755
--- a/proto/eth/service/validator_service.pb.go
+++ b/proto/eth/service/validator_service.pb.go
@@ -47,7 +47,7 @@ var file_proto_eth_service_validator_service_proto_rawDesc = []byte{
 	0x6f, 0x74, 0x6f, 0x2f, 0x65, 0x74, 0x68, 0x2f, 0x76, 0x32, 0x2f, 0x73, 0x73, 0x7a, 0x2e, 0x70,
 	0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1c, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x65, 0x74, 0x68, 0x2f,
 	0x76, 0x32, 0x2f, 0x76, 0x61, 0x6c, 0x69, 0x64, 0x61, 0x74, 0x6f, 0x72, 0x2e, 0x70, 0x72, 0x6f,
-	0x74, 0x6f, 0x32, 0xd4, 0x12, 0x0a, 0x0f, 0x42, 0x65, 0x61, 0x63, 0x6f, 0x6e, 0x56, 0x61, 0x6c,
+	0x74, 0x6f, 0x32, 0x9a, 0x11, 0x0a, 0x0f, 0x42, 0x65, 0x61, 0x63, 0x6f, 0x6e, 0x56, 0x61, 0x6c,
 	0x69, 0x64, 0x61, 0x74, 0x6f, 0x72, 0x12, 0xa3, 0x01, 0x0a, 0x11, 0x47, 0x65, 0x74, 0x41, 0x74,
 	0x74, 0x65, 0x73, 0x74, 0x65, 0x72, 0x44, 0x75, 0x74, 0x69, 0x65, 0x73, 0x12, 0x26, 0x2e, 0x65,
 	0x74, 0x68, 0x65, 0x72, 0x65, 0x75, 0x6d, 0x2e, 0x65, 0x74, 0x68, 0x2e, 0x76, 0x31, 0x2e, 0x41,
@@ -162,51 +162,39 @@ var file_proto_eth_service_validator_service_proto_rawDesc = []byte{
 	0x61, 0x6c, 0x2f, 0x65, 0x74, 0x68, 0x2f, 0x76, 0x31, 0x2f, 0x76, 0x61, 0x6c, 0x69, 0x64, 0x61,
 	0x74, 0x6f, 0x72, 0x2f, 0x62, 0x65, 0x61, 0x63, 0x6f, 0x6e, 0x5f, 0x63, 0x6f, 0x6d, 0x6d, 0x69,
 	0x74, 0x74, 0x65, 0x65, 0x5f, 0x73, 0x75, 0x62, 0x73, 0x63, 0x72, 0x69, 0x70, 0x74, 0x69, 0x6f,
-	0x6e, 0x73, 0x12, 0xb7, 0x01, 0x0a, 0x1f, 0x53, 0x75, 0x62, 0x6d, 0x69, 0x74, 0x53, 0x79, 0x6e,
-	0x63, 0x43, 0x6f, 0x6d, 0x6d, 0x69, 0x74, 0x74, 0x65, 0x65, 0x53, 0x75, 0x62, 0x73, 0x63, 0x72,
-	0x69, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x38, 0x2e, 0x65, 0x74, 0x68, 0x65, 0x72, 0x65, 0x75,
-	0x6d, 0x2e, 0x65, 0x74, 0x68, 0x2e, 0x76, 0x32, 0x2e, 0x53, 0x75, 0x62, 0x6d, 0x69, 0x74, 0x53,
-	0x79, 0x6e, 0x63, 0x43, 0x6f, 0x6d, 0x6d, 0x69, 0x74, 0x74, 0x65, 0x65, 0x53, 0x75, 0x62, 0x73,
-	0x63, 0x72, 0x69, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74,
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 }
 
 var file_proto_eth_service_validator_service_proto_goTypes = []interface{}{
@@ -218,19 +206,18 @@ var file_proto_eth_service_validator_service_proto_goTypes = []interface{}{
 	(*v1.SubmitValidatorRegistrationsRequest)(nil),       // 5: ethereum.eth.v1.SubmitValidatorRegistrationsRequest
 	(*v1.ProduceAttestationDataRequest)(nil),             // 6: ethereum.eth.v1.ProduceAttestationDataRequest
 	(*v1.SubmitBeaconCommitteeSubscriptionsRequest)(nil), // 7: ethereum.eth.v1.SubmitBeaconCommitteeSubscriptionsRequest
-	(*v2.SubmitSyncCommitteeSubscriptionsRequest)(nil),   // 8: ethereum.eth.v2.SubmitSyncCommitteeSubscriptionsRequest
-	(*v2.ProduceSyncCommitteeContributionRequest)(nil),   // 9: ethereum.eth.v2.ProduceSyncCommitteeContributionRequest
-	(*v2.GetLivenessRequest)(nil),                        // 10: ethereum.eth.v2.GetLivenessRequest
-	(*v1.AttesterDutiesResponse)(nil),                    // 11: ethereum.eth.v1.AttesterDutiesResponse
-	(*v1.ProposerDutiesResponse)(nil),                    // 12: ethereum.eth.v1.ProposerDutiesResponse
-	(*v2.SyncCommitteeDutiesResponse)(nil),               // 13: ethereum.eth.v2.SyncCommitteeDutiesResponse
-	(*v2.ProduceBlockResponseV2)(nil),                    // 14: ethereum.eth.v2.ProduceBlockResponseV2
-	(*v2.SSZContainer)(nil),                              // 15: ethereum.eth.v2.SSZContainer
-	(*v2.ProduceBlindedBlockResponse)(nil),               // 16: ethereum.eth.v2.ProduceBlindedBlockResponse
-	(*empty.Empty)(nil),                                  // 17: google.protobuf.Empty
-	(*v1.ProduceAttestationDataResponse)(nil),            // 18: ethereum.eth.v1.ProduceAttestationDataResponse
-	(*v2.ProduceSyncCommitteeContributionResponse)(nil),  // 19: ethereum.eth.v2.ProduceSyncCommitteeContributionResponse
-	(*v2.GetLivenessResponse)(nil),                       // 20: ethereum.eth.v2.GetLivenessResponse
+	(*v2.ProduceSyncCommitteeContributionRequest)(nil),   // 8: ethereum.eth.v2.ProduceSyncCommitteeContributionRequest
+	(*v2.GetLivenessRequest)(nil),                        // 9: ethereum.eth.v2.GetLivenessRequest
+	(*v1.AttesterDutiesResponse)(nil),                    // 10: ethereum.eth.v1.AttesterDutiesResponse
+	(*v1.ProposerDutiesResponse)(nil),                    // 11: ethereum.eth.v1.ProposerDutiesResponse
+	(*v2.SyncCommitteeDutiesResponse)(nil),               // 12: ethereum.eth.v2.SyncCommitteeDutiesResponse
+	(*v2.ProduceBlockResponseV2)(nil),                    // 13: ethereum.eth.v2.ProduceBlockResponseV2
+	(*v2.SSZContainer)(nil),                              // 14: ethereum.eth.v2.SSZContainer
+	(*v2.ProduceBlindedBlockResponse)(nil),               // 15: ethereum.eth.v2.ProduceBlindedBlockResponse
+	(*empty.Empty)(nil),                                  // 16: google.protobuf.Empty
+	(*v1.ProduceAttestationDataResponse)(nil),            // 17: ethereum.eth.v1.ProduceAttestationDataResponse
+	(*v2.ProduceSyncCommitteeContributionResponse)(nil),  // 18: ethereum.eth.v2.ProduceSyncCommitteeContributionResponse
+	(*v2.GetLivenessResponse)(nil),                       // 19: ethereum.eth.v2.GetLivenessResponse
 }
 var file_proto_eth_service_validator_service_proto_depIdxs = []int32{
 	0,  // 0: ethereum.eth.service.BeaconValidator.GetAttesterDuties:input_type -> ethereum.eth.v1.AttesterDutiesRequest
@@ -244,25 +231,23 @@ var file_proto_eth_service_validator_service_proto_depIdxs = []int32{
 	5,  // 8: ethereum.eth.service.BeaconValidator.SubmitValidatorRegistration:input_type -> ethereum.eth.v1.SubmitValidatorRegistrationsRequest
 	6,  // 9: ethereum.eth.service.BeaconValidator.ProduceAttestationData:input_type -> ethereum.eth.v1.ProduceAttestationDataRequest
 	7,  // 10: ethereum.eth.service.BeaconValidator.SubmitBeaconCommitteeSubscription:input_type -> ethereum.eth.v1.SubmitBeaconCommitteeSubscriptionsRequest
-	8,  // 11: ethereum.eth.service.BeaconValidator.SubmitSyncCommitteeSubscription:input_type -> ethereum.eth.v2.SubmitSyncCommitteeSubscriptionsRequest
-	9,  // 12: ethereum.eth.service.BeaconValidator.ProduceSyncCommitteeContribution:input_type -> ethereum.eth.v2.ProduceSyncCommitteeContributionRequest
-	10, // 13: ethereum.eth.service.BeaconValidator.GetLiveness:input_type -> ethereum.eth.v2.GetLivenessRequest
-	11, // 14: ethereum.eth.service.BeaconValidator.GetAttesterDuties:output_type -> ethereum.eth.v1.AttesterDutiesResponse
-	12, // 15: ethereum.eth.service.BeaconValidator.GetProposerDuties:output_type -> ethereum.eth.v1.ProposerDutiesResponse
-	13, // 16: ethereum.eth.service.BeaconValidator.GetSyncCommitteeDuties:output_type -> ethereum.eth.v2.SyncCommitteeDutiesResponse
-	14, // 17: ethereum.eth.service.BeaconValidator.ProduceBlockV2:output_type -> ethereum.eth.v2.ProduceBlockResponseV2
-	15, // 18: ethereum.eth.service.BeaconValidator.ProduceBlockV2SSZ:output_type -> ethereum.eth.v2.SSZContainer
-	16, // 19: ethereum.eth.service.BeaconValidator.ProduceBlindedBlock:output_type -> ethereum.eth.v2.ProduceBlindedBlockResponse
-	15, // 20: ethereum.eth.service.BeaconValidator.ProduceBlindedBlockSSZ:output_type -> ethereum.eth.v2.SSZContainer
-	17, // 21: ethereum.eth.service.BeaconValidator.PrepareBeaconProposer:output_type -> google.protobuf.Empty
-	17, // 22: ethereum.eth.service.BeaconValidator.SubmitValidatorRegistration:output_type -> google.protobuf.Empty
-	18, // 23: ethereum.eth.service.BeaconValidator.ProduceAttestationData:output_type -> ethereum.eth.v1.ProduceAttestationDataResponse
-	17, // 24: ethereum.eth.service.BeaconValidator.SubmitBeaconCommitteeSubscription:output_type -> google.protobuf.Empty
-	17, // 25: ethereum.eth.service.BeaconValidator.SubmitSyncCommitteeSubscription:output_type -> google.protobuf.Empty
-	19, // 26: ethereum.eth.service.BeaconValidator.ProduceSyncCommitteeContribution:output_type -> ethereum.eth.v2.ProduceSyncCommitteeContributionResponse
-	20, // 27: ethereum.eth.service.BeaconValidator.GetLiveness:output_type -> ethereum.eth.v2.GetLivenessResponse
-	14, // [14:28] is the sub-list for method output_type
-	0,  // [0:14] is the sub-list for method input_type
+	8,  // 11: ethereum.eth.service.BeaconValidator.ProduceSyncCommitteeContribution:input_type -> ethereum.eth.v2.ProduceSyncCommitteeContributionRequest
+	9,  // 12: ethereum.eth.service.BeaconValidator.GetLiveness:input_type -> ethereum.eth.v2.GetLivenessRequest
+	10, // 13: ethereum.eth.service.BeaconValidator.GetAttesterDuties:output_type -> ethereum.eth.v1.AttesterDutiesResponse
+	11, // 14: ethereum.eth.service.BeaconValidator.GetProposerDuties:output_type -> ethereum.eth.v1.ProposerDutiesResponse
+	12, // 15: ethereum.eth.service.BeaconValidator.GetSyncCommitteeDuties:output_type -> ethereum.eth.v2.SyncCommitteeDutiesResponse
+	13, // 16: ethereum.eth.service.BeaconValidator.ProduceBlockV2:output_type -> ethereum.eth.v2.ProduceBlockResponseV2
+	14, // 17: ethereum.eth.service.BeaconValidator.ProduceBlockV2SSZ:output_type -> ethereum.eth.v2.SSZContainer
+	15, // 18: ethereum.eth.service.BeaconValidator.ProduceBlindedBlock:output_type -> ethereum.eth.v2.ProduceBlindedBlockResponse
+	14, // 19: ethereum.eth.service.BeaconValidator.ProduceBlindedBlockSSZ:output_type -> ethereum.eth.v2.SSZContainer
+	16, // 20: ethereum.eth.service.BeaconValidator.PrepareBeaconProposer:output_type -> google.protobuf.Empty
+	16, // 21: ethereum.eth.service.BeaconValidator.SubmitValidatorRegistration:output_type -> google.protobuf.Empty
+	17, // 22: ethereum.eth.service.BeaconValidator.ProduceAttestationData:output_type -> ethereum.eth.v1.ProduceAttestationDataResponse
+	16, // 23: ethereum.eth.service.BeaconValidator.SubmitBeaconCommitteeSubscription:output_type -> google.protobuf.Empty
+	18, // 24: ethereum.eth.service.BeaconValidator.ProduceSyncCommitteeContribution:output_type -> ethereum.eth.v2.ProduceSyncCommitteeContributionResponse
+	19, // 25: ethereum.eth.service.BeaconValidator.GetLiveness:output_type -> ethereum.eth.v2.GetLivenessResponse
+	13, // [13:26] is the sub-list for method output_type
+	0,  // [0:13] is the sub-list for method input_type
 	0,  // [0:0] is the sub-list for extension type_name
 	0,  // [0:0] is the sub-list for extension extendee
 	0,  // [0:0] is the sub-list for field type_name
@@ -315,7 +300,6 @@ type BeaconValidatorClient interface {
 	SubmitValidatorRegistration(ctx context.Context, in *v1.SubmitValidatorRegistrationsRequest, opts ...grpc.CallOption) (*empty.Empty, error)
 	ProduceAttestationData(ctx context.Context, in *v1.ProduceAttestationDataRequest, opts ...grpc.CallOption) (*v1.ProduceAttestationDataResponse, error)
 	SubmitBeaconCommitteeSubscription(ctx context.Context, in *v1.SubmitBeaconCommitteeSubscriptionsRequest, opts ...grpc.CallOption) (*empty.Empty, error)
-	SubmitSyncCommitteeSubscription(ctx context.Context, in *v2.SubmitSyncCommitteeSubscriptionsRequest, opts ...grpc.CallOption) (*empty.Empty, error)
 	ProduceSyncCommitteeContribution(ctx context.Context, in *v2.ProduceSyncCommitteeContributionRequest, opts ...grpc.CallOption) (*v2.ProduceSyncCommitteeContributionResponse, error)
 	GetLiveness(ctx context.Context, in *v2.GetLivenessRequest, opts ...grpc.CallOption) (*v2.GetLivenessResponse, error)
 }
@@ -427,15 +411,6 @@ func (c *beaconValidatorClient) SubmitBeaconCommitteeSubscription(ctx context.Co
 	return out, nil
 }
 
-func (c *beaconValidatorClient) SubmitSyncCommitteeSubscription(ctx context.Context, in *v2.SubmitSyncCommitteeSubscriptionsRequest, opts ...grpc.CallOption) (*empty.Empty, error) {
-	out := new(empty.Empty)
-	err := c.cc.Invoke(ctx, "/ethereum.eth.service.BeaconValidator/SubmitSyncCommitteeSubscription", in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
 func (c *beaconValidatorClient) ProduceSyncCommitteeContribution(ctx context.Context, in *v2.ProduceSyncCommitteeContributionRequest, opts ...grpc.CallOption) (*v2.ProduceSyncCommitteeContributionResponse, error) {
 	out := new(v2.ProduceSyncCommitteeContributionResponse)
 	err := c.cc.Invoke(ctx, "/ethereum.eth.service.BeaconValidator/ProduceSyncCommitteeContribution", in, out, opts...)
@@ -467,7 +442,6 @@ type BeaconValidatorServer interface {
 	SubmitValidatorRegistration(context.Context, *v1.SubmitValidatorRegistrationsRequest) (*empty.Empty, error)
 	ProduceAttestationData(context.Context, *v1.ProduceAttestationDataRequest) (*v1.ProduceAttestationDataResponse, error)
 	SubmitBeaconCommitteeSubscription(context.Context, *v1.SubmitBeaconCommitteeSubscriptionsRequest) (*empty.Empty, error)
-	SubmitSyncCommitteeSubscription(context.Context, *v2.SubmitSyncCommitteeSubscriptionsRequest) (*empty.Empty, error)
 	ProduceSyncCommitteeContribution(context.Context, *v2.ProduceSyncCommitteeContributionRequest) (*v2.ProduceSyncCommitteeContributionResponse, error)
 	GetLiveness(context.Context, *v2.GetLivenessRequest) (*v2.GetLivenessResponse, error)
 }
@@ -509,9 +483,6 @@ func (*UnimplementedBeaconValidatorServer) ProduceAttestationData(context.Contex
 func (*UnimplementedBeaconValidatorServer) SubmitBeaconCommitteeSubscription(context.Context, *v1.SubmitBeaconCommitteeSubscriptionsRequest) (*empty.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method SubmitBeaconCommitteeSubscription not implemented")
 }
-func (*UnimplementedBeaconValidatorServer) SubmitSyncCommitteeSubscription(context.Context, *v2.SubmitSyncCommitteeSubscriptionsRequest) (*empty.Empty, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method SubmitSyncCommitteeSubscription not implemented")
-}
 func (*UnimplementedBeaconValidatorServer) ProduceSyncCommitteeContribution(context.Context, *v2.ProduceSyncCommitteeContributionRequest) (*v2.ProduceSyncCommitteeContributionResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ProduceSyncCommitteeContribution not implemented")
 }
@@ -721,24 +692,6 @@ func _BeaconValidator_SubmitBeaconCommitteeSubscription_Handler(srv interface{},
 	return interceptor(ctx, in, info, handler)
 }
 
-func _BeaconValidator_SubmitSyncCommitteeSubscription_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(v2.SubmitSyncCommitteeSubscriptionsRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(BeaconValidatorServer).SubmitSyncCommitteeSubscription(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/ethereum.eth.service.BeaconValidator/SubmitSyncCommitteeSubscription",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(BeaconValidatorServer).SubmitSyncCommitteeSubscription(ctx, req.(*v2.SubmitSyncCommitteeSubscriptionsRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
 func _BeaconValidator_ProduceSyncCommitteeContribution_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(v2.ProduceSyncCommitteeContributionRequest)
 	if err := dec(in); err != nil {
@@ -823,10 +776,6 @@ var _BeaconValidator_serviceDesc = grpc.ServiceDesc{
 			MethodName: "SubmitBeaconCommitteeSubscription",
 			Handler:    _BeaconValidator_SubmitBeaconCommitteeSubscription_Handler,
 		},
-		{
-			MethodName: "SubmitSyncCommitteeSubscription",
-			Handler:    _BeaconValidator_SubmitSyncCommitteeSubscription_Handler,
-		},
 		{
 			MethodName: "ProduceSyncCommitteeContribution",
 			Handler:    _BeaconValidator_ProduceSyncCommitteeContribution_Handler,
diff --git a/proto/eth/service/validator_service.pb.gw.go b/proto/eth/service/validator_service.pb.gw.go
index f4825efced..46fa0bbd1f 100755
--- a/proto/eth/service/validator_service.pb.gw.go
+++ b/proto/eth/service/validator_service.pb.gw.go
@@ -659,40 +659,6 @@ func local_request_BeaconValidator_SubmitBeaconCommitteeSubscription_0(ctx conte
 
 }
 
-func request_BeaconValidator_SubmitSyncCommitteeSubscription_0(ctx context.Context, marshaler runtime.Marshaler, client BeaconValidatorClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq eth.SubmitSyncCommitteeSubscriptionsRequest
-	var metadata runtime.ServerMetadata
-
-	newReader, berr := utilities.IOReaderFactory(req.Body)
-	if berr != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", berr)
-	}
-	if err := marshaler.NewDecoder(newReader()).Decode(&protoReq); err != nil && err != io.EOF {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := client.SubmitSyncCommitteeSubscription(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
-	return msg, metadata, err
-
-}
-
-func local_request_BeaconValidator_SubmitSyncCommitteeSubscription_0(ctx context.Context, marshaler runtime.Marshaler, server BeaconValidatorServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq eth.SubmitSyncCommitteeSubscriptionsRequest
-	var metadata runtime.ServerMetadata
-
-	newReader, berr := utilities.IOReaderFactory(req.Body)
-	if berr != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", berr)
-	}
-	if err := marshaler.NewDecoder(newReader()).Decode(&protoReq); err != nil && err != io.EOF {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := server.SubmitSyncCommitteeSubscription(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
 var (
 	filter_BeaconValidator_ProduceSyncCommitteeContribution_0 = &utilities.DoubleArray{Encoding: map[string]int{}, Base: []int(nil), Check: []int(nil)}
 )
@@ -1058,29 +1024,6 @@ func RegisterBeaconValidatorHandlerServer(ctx context.Context, mux *runtime.Serv
 
 	})
 
-	mux.Handle("POST", pattern_BeaconValidator_SubmitSyncCommitteeSubscription_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		var stream runtime.ServerTransportStream
-		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req, "/ethereum.eth.service.BeaconValidator/SubmitSyncCommitteeSubscription")
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_BeaconValidator_SubmitSyncCommitteeSubscription_0(rctx, inboundMarshaler, server, req, pathParams)
-		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
-		ctx = runtime.NewServerMetadataContext(ctx, md)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_BeaconValidator_SubmitSyncCommitteeSubscription_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
 	mux.Handle("GET", pattern_BeaconValidator_ProduceSyncCommitteeContribution_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@@ -1388,26 +1331,6 @@ func RegisterBeaconValidatorHandlerClient(ctx context.Context, mux *runtime.Serv
 
 	})
 
-	mux.Handle("POST", pattern_BeaconValidator_SubmitSyncCommitteeSubscription_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		rctx, err := runtime.AnnotateContext(ctx, mux, req, "/ethereum.eth.service.BeaconValidator/SubmitSyncCommitteeSubscription")
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := request_BeaconValidator_SubmitSyncCommitteeSubscription_0(rctx, inboundMarshaler, client, req, pathParams)
-		ctx = runtime.NewServerMetadataContext(ctx, md)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_BeaconValidator_SubmitSyncCommitteeSubscription_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
 	mux.Handle("GET", pattern_BeaconValidator_ProduceSyncCommitteeContribution_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@@ -1474,8 +1397,6 @@ var (
 
 	pattern_BeaconValidator_SubmitBeaconCommitteeSubscription_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 2, 4}, []string{"internal", "eth", "v1", "validator", "beacon_committee_subscriptions"}, ""))
 
-	pattern_BeaconValidator_SubmitSyncCommitteeSubscription_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 2, 4}, []string{"internal", "eth", "v1", "validator", "sync_committee_subscriptions"}, ""))
-
 	pattern_BeaconValidator_ProduceSyncCommitteeContribution_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 2, 4}, []string{"internal", "eth", "v1", "validator", "sync_committee_contribution"}, ""))
 
 	pattern_BeaconValidator_GetLiveness_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 2, 4, 1, 0, 4, 1, 5, 5}, []string{"internal", "eth", "v1", "validator", "liveness", "epoch"}, ""))
@@ -1504,8 +1425,6 @@ var (
 
 	forward_BeaconValidator_SubmitBeaconCommitteeSubscription_0 = runtime.ForwardResponseMessage
 
-	forward_BeaconValidator_SubmitSyncCommitteeSubscription_0 = runtime.ForwardResponseMessage
-
 	forward_BeaconValidator_ProduceSyncCommitteeContribution_0 = runtime.ForwardResponseMessage
 
 	forward_BeaconValidator_GetLiveness_0 = runtime.ForwardResponseMessage
diff --git a/proto/eth/service/validator_service.proto b/proto/eth/service/validator_service.proto
index f00a6247a9..c5aa1e10c0 100644
--- a/proto/eth/service/validator_service.proto
+++ b/proto/eth/service/validator_service.proto
@@ -222,21 +222,6 @@ service BeaconValidator {
     };
   }
 
-  // SubmitSyncCommitteeSubscription subscribes to a number of sync committee subnets
-  //
-  // Response usage:
-  // - 200: Successful response
-  // - 400: Invalid request syntax
-  // - 500: Beacon node internal error
-  //
-  // Spec: https://ethereum.github.io/beacon-APIs/?urls.primaryName=v2.3.0#/Validator/prepareSyncCommitteeSubnets
-  rpc SubmitSyncCommitteeSubscription(v2.SubmitSyncCommitteeSubscriptionsRequest) returns (google.protobuf.Empty) {
-    option (google.api.http) = {
-      post: "/internal/eth/v1/validator/sync_committee_subscriptions"
-      body: "*"
-    };
-  }
-
   // ProduceSyncCommitteeContribution requests that the beacon node produces a sync committee contribution.
   //
   // HTTP response usage:
diff --git a/proto/eth/v2/validator.pb.go b/proto/eth/v2/validator.pb.go
index ed4a6240ed..45fb8b1f00 100755
--- a/proto/eth/v2/validator.pb.go
+++ b/proto/eth/v2/validator.pb.go
@@ -307,116 +307,6 @@ func (x *ProduceBlindedBlockResponse) GetData() *BlindedBeaconBlockContainer {
 	return nil
 }
 
-type SubmitSyncCommitteeSubscriptionsRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Data []*SyncCommitteeSubscription `protobuf:"bytes,1,rep,name=data,proto3" json:"data,omitempty"`
-}
-
-func (x *SubmitSyncCommitteeSubscriptionsRequest) Reset() {
-	*x = SubmitSyncCommitteeSubscriptionsRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v2_validator_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *SubmitSyncCommitteeSubscriptionsRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*SubmitSyncCommitteeSubscriptionsRequest) ProtoMessage() {}
-
-func (x *SubmitSyncCommitteeSubscriptionsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v2_validator_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use SubmitSyncCommitteeSubscriptionsRequest.ProtoReflect.Descriptor instead.
-func (*SubmitSyncCommitteeSubscriptionsRequest) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{5}
-}
-
-func (x *SubmitSyncCommitteeSubscriptionsRequest) GetData() []*SyncCommitteeSubscription {
-	if x != nil {
-		return x.Data
-	}
-	return nil
-}
-
-type SyncCommitteeSubscription struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	ValidatorIndex       github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.ValidatorIndex `protobuf:"varint,1,opt,name=validator_index,json=validatorIndex,proto3" json:"validator_index,omitempty" cast-type:"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives.ValidatorIndex"`
-	SyncCommitteeIndices []uint64                                                                    `protobuf:"varint,2,rep,packed,name=sync_committee_indices,json=syncCommitteeIndices,proto3" json:"sync_committee_indices,omitempty"`
-	UntilEpoch           github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.Epoch          `protobuf:"varint,3,opt,name=until_epoch,json=untilEpoch,proto3" json:"until_epoch,omitempty" cast-type:"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives.Epoch"`
-}
-
-func (x *SyncCommitteeSubscription) Reset() {
-	*x = SyncCommitteeSubscription{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v2_validator_proto_msgTypes[6]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *SyncCommitteeSubscription) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*SyncCommitteeSubscription) ProtoMessage() {}
-
-func (x *SyncCommitteeSubscription) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v2_validator_proto_msgTypes[6]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use SyncCommitteeSubscription.ProtoReflect.Descriptor instead.
-func (*SyncCommitteeSubscription) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{6}
-}
-
-func (x *SyncCommitteeSubscription) GetValidatorIndex() github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.ValidatorIndex {
-	if x != nil {
-		return x.ValidatorIndex
-	}
-	return github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.ValidatorIndex(0)
-}
-
-func (x *SyncCommitteeSubscription) GetSyncCommitteeIndices() []uint64 {
-	if x != nil {
-		return x.SyncCommitteeIndices
-	}
-	return nil
-}
-
-func (x *SyncCommitteeSubscription) GetUntilEpoch() github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.Epoch {
-	if x != nil {
-		return x.UntilEpoch
-	}
-	return github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.Epoch(0)
-}
-
 type ProduceSyncCommitteeContributionRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -430,7 +320,7 @@ type ProduceSyncCommitteeContributionRequest struct {
 func (x *ProduceSyncCommitteeContributionRequest) Reset() {
 	*x = ProduceSyncCommitteeContributionRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v2_validator_proto_msgTypes[7]
+		mi := &file_proto_eth_v2_validator_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -443,7 +333,7 @@ func (x *ProduceSyncCommitteeContributionRequest) String() string {
 func (*ProduceSyncCommitteeContributionRequest) ProtoMessage() {}
 
 func (x *ProduceSyncCommitteeContributionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v2_validator_proto_msgTypes[7]
+	mi := &file_proto_eth_v2_validator_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -456,7 +346,7 @@ func (x *ProduceSyncCommitteeContributionRequest) ProtoReflect() protoreflect.Me
 
 // Deprecated: Use ProduceSyncCommitteeContributionRequest.ProtoReflect.Descriptor instead.
 func (*ProduceSyncCommitteeContributionRequest) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{7}
+	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *ProduceSyncCommitteeContributionRequest) GetSlot() github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.Slot {
@@ -491,7 +381,7 @@ type ProduceSyncCommitteeContributionResponse struct {
 func (x *ProduceSyncCommitteeContributionResponse) Reset() {
 	*x = ProduceSyncCommitteeContributionResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v2_validator_proto_msgTypes[8]
+		mi := &file_proto_eth_v2_validator_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -504,7 +394,7 @@ func (x *ProduceSyncCommitteeContributionResponse) String() string {
 func (*ProduceSyncCommitteeContributionResponse) ProtoMessage() {}
 
 func (x *ProduceSyncCommitteeContributionResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v2_validator_proto_msgTypes[8]
+	mi := &file_proto_eth_v2_validator_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -517,7 +407,7 @@ func (x *ProduceSyncCommitteeContributionResponse) ProtoReflect() protoreflect.M
 
 // Deprecated: Use ProduceSyncCommitteeContributionResponse.ProtoReflect.Descriptor instead.
 func (*ProduceSyncCommitteeContributionResponse) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{8}
+	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *ProduceSyncCommitteeContributionResponse) GetData() *SyncCommitteeContribution {
@@ -542,7 +432,7 @@ type SyncCommitteeContribution struct {
 func (x *SyncCommitteeContribution) Reset() {
 	*x = SyncCommitteeContribution{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v2_validator_proto_msgTypes[9]
+		mi := &file_proto_eth_v2_validator_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -555,7 +445,7 @@ func (x *SyncCommitteeContribution) String() string {
 func (*SyncCommitteeContribution) ProtoMessage() {}
 
 func (x *SyncCommitteeContribution) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v2_validator_proto_msgTypes[9]
+	mi := &file_proto_eth_v2_validator_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -568,7 +458,7 @@ func (x *SyncCommitteeContribution) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SyncCommitteeContribution.ProtoReflect.Descriptor instead.
 func (*SyncCommitteeContribution) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{9}
+	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *SyncCommitteeContribution) GetSlot() github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.Slot {
@@ -619,7 +509,7 @@ type ContributionAndProof struct {
 func (x *ContributionAndProof) Reset() {
 	*x = ContributionAndProof{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v2_validator_proto_msgTypes[10]
+		mi := &file_proto_eth_v2_validator_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -632,7 +522,7 @@ func (x *ContributionAndProof) String() string {
 func (*ContributionAndProof) ProtoMessage() {}
 
 func (x *ContributionAndProof) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v2_validator_proto_msgTypes[10]
+	mi := &file_proto_eth_v2_validator_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -645,7 +535,7 @@ func (x *ContributionAndProof) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ContributionAndProof.ProtoReflect.Descriptor instead.
 func (*ContributionAndProof) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{10}
+	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *ContributionAndProof) GetAggregatorIndex() github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.ValidatorIndex {
@@ -681,7 +571,7 @@ type SignedContributionAndProof struct {
 func (x *SignedContributionAndProof) Reset() {
 	*x = SignedContributionAndProof{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v2_validator_proto_msgTypes[11]
+		mi := &file_proto_eth_v2_validator_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -694,7 +584,7 @@ func (x *SignedContributionAndProof) String() string {
 func (*SignedContributionAndProof) ProtoMessage() {}
 
 func (x *SignedContributionAndProof) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v2_validator_proto_msgTypes[11]
+	mi := &file_proto_eth_v2_validator_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -707,7 +597,7 @@ func (x *SignedContributionAndProof) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SignedContributionAndProof.ProtoReflect.Descriptor instead.
 func (*SignedContributionAndProof) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{11}
+	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *SignedContributionAndProof) GetMessage() *ContributionAndProof {
@@ -736,7 +626,7 @@ type GetLivenessRequest struct {
 func (x *GetLivenessRequest) Reset() {
 	*x = GetLivenessRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v2_validator_proto_msgTypes[12]
+		mi := &file_proto_eth_v2_validator_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -749,7 +639,7 @@ func (x *GetLivenessRequest) String() string {
 func (*GetLivenessRequest) ProtoMessage() {}
 
 func (x *GetLivenessRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v2_validator_proto_msgTypes[12]
+	mi := &file_proto_eth_v2_validator_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -762,7 +652,7 @@ func (x *GetLivenessRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetLivenessRequest.ProtoReflect.Descriptor instead.
 func (*GetLivenessRequest) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{12}
+	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *GetLivenessRequest) GetEpoch() github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.Epoch {
@@ -790,7 +680,7 @@ type GetLivenessResponse struct {
 func (x *GetLivenessResponse) Reset() {
 	*x = GetLivenessResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v2_validator_proto_msgTypes[13]
+		mi := &file_proto_eth_v2_validator_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -803,7 +693,7 @@ func (x *GetLivenessResponse) String() string {
 func (*GetLivenessResponse) ProtoMessage() {}
 
 func (x *GetLivenessResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v2_validator_proto_msgTypes[13]
+	mi := &file_proto_eth_v2_validator_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -816,7 +706,7 @@ func (x *GetLivenessResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetLivenessResponse.ProtoReflect.Descriptor instead.
 func (*GetLivenessResponse) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{13}
+	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *GetLivenessResponse) GetData() []*GetLivenessResponse_Liveness {
@@ -838,7 +728,7 @@ type GetLivenessResponse_Liveness struct {
 func (x *GetLivenessResponse_Liveness) Reset() {
 	*x = GetLivenessResponse_Liveness{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_eth_v2_validator_proto_msgTypes[14]
+		mi := &file_proto_eth_v2_validator_proto_msgTypes[12]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -851,7 +741,7 @@ func (x *GetLivenessResponse_Liveness) String() string {
 func (*GetLivenessResponse_Liveness) ProtoMessage() {}
 
 func (x *GetLivenessResponse_Liveness) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_eth_v2_validator_proto_msgTypes[14]
+	mi := &file_proto_eth_v2_validator_proto_msgTypes[12]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -864,7 +754,7 @@ func (x *GetLivenessResponse_Liveness) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetLivenessResponse_Liveness.ProtoReflect.Descriptor instead.
 func (*GetLivenessResponse_Liveness) Descriptor() ([]byte, []int) {
-	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{13, 0}
+	return file_proto_eth_v2_validator_proto_rawDescGZIP(), []int{11, 0}
 }
 
 func (x *GetLivenessResponse_Liveness) GetIndex() github_com_prysmaticlabs_prysm_v4_consensus_types_primitives.ValidatorIndex {
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-	0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x70, 0x72, 0x79, 0x73, 0x6d,
-	0x61, 0x74, 0x69, 0x63, 0x6c, 0x61, 0x62, 0x73, 0x2f, 0x70, 0x72, 0x79, 0x73, 0x6d, 0x2f, 0x76,
-	0x34, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x65, 0x74, 0x68, 0x2f, 0x76, 0x32, 0x3b, 0x65,
-	0x74, 0x68, 0xaa, 0x02, 0x0f, 0x45, 0x74, 0x68, 0x65, 0x72, 0x65, 0x75, 0x6d, 0x2e, 0x45, 0x74,
-	0x68, 0x2e, 0x56, 0x32, 0xca, 0x02, 0x0f, 0x45, 0x74, 0x68, 0x65, 0x72, 0x65, 0x75, 0x6d, 0x5c,
-	0x45, 0x74, 0x68, 0x5c, 0x76, 0x32, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x65, 0x74, 0x68, 0x2f, 0x76, 0x32, 0x3b, 0x65, 0x74, 0x68,
+	0xaa, 0x02, 0x0f, 0x45, 0x74, 0x68, 0x65, 0x72, 0x65, 0x75, 0x6d, 0x2e, 0x45, 0x74, 0x68, 0x2e,
+	0x56, 0x32, 0xca, 0x02, 0x0f, 0x45, 0x74, 0x68, 0x65, 0x72, 0x65, 0x75, 0x6d, 0x5c, 0x45, 0x74,
+	0x68, 0x5c, 0x76, 0x32, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1096,43 +960,40 @@ func file_proto_eth_v2_validator_proto_rawDescGZIP() []byte {
 	return file_proto_eth_v2_validator_proto_rawDescData
 }
 
-var file_proto_eth_v2_validator_proto_msgTypes = make([]protoimpl.MessageInfo, 15)
+var file_proto_eth_v2_validator_proto_msgTypes = make([]protoimpl.MessageInfo, 13)
 var file_proto_eth_v2_validator_proto_goTypes = []interface{}{
 	(*SyncCommitteeDutiesRequest)(nil),               // 0: ethereum.eth.v2.SyncCommitteeDutiesRequest
 	(*SyncCommitteeDutiesResponse)(nil),              // 1: ethereum.eth.v2.SyncCommitteeDutiesResponse
 	(*SyncCommitteeDuty)(nil),                        // 2: ethereum.eth.v2.SyncCommitteeDuty
 	(*ProduceBlockResponseV2)(nil),                   // 3: ethereum.eth.v2.ProduceBlockResponseV2
 	(*ProduceBlindedBlockResponse)(nil),              // 4: ethereum.eth.v2.ProduceBlindedBlockResponse
-	(*SubmitSyncCommitteeSubscriptionsRequest)(nil),  // 5: ethereum.eth.v2.SubmitSyncCommitteeSubscriptionsRequest
-	(*SyncCommitteeSubscription)(nil),                // 6: ethereum.eth.v2.SyncCommitteeSubscription
-	(*ProduceSyncCommitteeContributionRequest)(nil),  // 7: ethereum.eth.v2.ProduceSyncCommitteeContributionRequest
-	(*ProduceSyncCommitteeContributionResponse)(nil), // 8: ethereum.eth.v2.ProduceSyncCommitteeContributionResponse
-	(*SyncCommitteeContribution)(nil),                // 9: ethereum.eth.v2.SyncCommitteeContribution
-	(*ContributionAndProof)(nil),                     // 10: ethereum.eth.v2.ContributionAndProof
-	(*SignedContributionAndProof)(nil),               // 11: ethereum.eth.v2.SignedContributionAndProof
-	(*GetLivenessRequest)(nil),                       // 12: ethereum.eth.v2.GetLivenessRequest
-	(*GetLivenessResponse)(nil),                      // 13: ethereum.eth.v2.GetLivenessResponse
-	(*GetLivenessResponse_Liveness)(nil),             // 14: ethereum.eth.v2.GetLivenessResponse.Liveness
-	(Version)(0),                                     // 15: ethereum.eth.v2.Version
-	(*BeaconBlockContainerV2)(nil),                   // 16: ethereum.eth.v2.BeaconBlockContainerV2
-	(*BlindedBeaconBlockContainer)(nil),              // 17: ethereum.eth.v2.BlindedBeaconBlockContainer
+	(*ProduceSyncCommitteeContributionRequest)(nil),  // 5: ethereum.eth.v2.ProduceSyncCommitteeContributionRequest
+	(*ProduceSyncCommitteeContributionResponse)(nil), // 6: ethereum.eth.v2.ProduceSyncCommitteeContributionResponse
+	(*SyncCommitteeContribution)(nil),                // 7: ethereum.eth.v2.SyncCommitteeContribution
+	(*ContributionAndProof)(nil),                     // 8: ethereum.eth.v2.ContributionAndProof
+	(*SignedContributionAndProof)(nil),               // 9: ethereum.eth.v2.SignedContributionAndProof
+	(*GetLivenessRequest)(nil),                       // 10: ethereum.eth.v2.GetLivenessRequest
+	(*GetLivenessResponse)(nil),                      // 11: ethereum.eth.v2.GetLivenessResponse
+	(*GetLivenessResponse_Liveness)(nil),             // 12: ethereum.eth.v2.GetLivenessResponse.Liveness
+	(Version)(0),                                     // 13: ethereum.eth.v2.Version
+	(*BeaconBlockContainerV2)(nil),                   // 14: ethereum.eth.v2.BeaconBlockContainerV2
+	(*BlindedBeaconBlockContainer)(nil),              // 15: ethereum.eth.v2.BlindedBeaconBlockContainer
 }
 var file_proto_eth_v2_validator_proto_depIdxs = []int32{
 	2,  // 0: ethereum.eth.v2.SyncCommitteeDutiesResponse.data:type_name -> ethereum.eth.v2.SyncCommitteeDuty
-	15, // 1: ethereum.eth.v2.ProduceBlockResponseV2.version:type_name -> ethereum.eth.v2.Version
-	16, // 2: ethereum.eth.v2.ProduceBlockResponseV2.data:type_name -> ethereum.eth.v2.BeaconBlockContainerV2
-	15, // 3: ethereum.eth.v2.ProduceBlindedBlockResponse.version:type_name -> ethereum.eth.v2.Version
-	17, // 4: ethereum.eth.v2.ProduceBlindedBlockResponse.data:type_name -> ethereum.eth.v2.BlindedBeaconBlockContainer
-	6,  // 5: ethereum.eth.v2.SubmitSyncCommitteeSubscriptionsRequest.data:type_name -> ethereum.eth.v2.SyncCommitteeSubscription
-	9,  // 6: ethereum.eth.v2.ProduceSyncCommitteeContributionResponse.data:type_name -> ethereum.eth.v2.SyncCommitteeContribution
-	9,  // 7: ethereum.eth.v2.ContributionAndProof.contribution:type_name -> ethereum.eth.v2.SyncCommitteeContribution
-	10, // 8: ethereum.eth.v2.SignedContributionAndProof.message:type_name -> ethereum.eth.v2.ContributionAndProof
-	14, // 9: ethereum.eth.v2.GetLivenessResponse.data:type_name -> ethereum.eth.v2.GetLivenessResponse.Liveness
-	10, // [10:10] is the sub-list for method output_type
-	10, // [10:10] is the sub-list for method input_type
-	10, // [10:10] is the sub-list for extension type_name
-	10, // [10:10] is the sub-list for extension extendee
-	0,  // [0:10] is the sub-list for field type_name
+	13, // 1: ethereum.eth.v2.ProduceBlockResponseV2.version:type_name -> ethereum.eth.v2.Version
+	14, // 2: ethereum.eth.v2.ProduceBlockResponseV2.data:type_name -> ethereum.eth.v2.BeaconBlockContainerV2
+	13, // 3: ethereum.eth.v2.ProduceBlindedBlockResponse.version:type_name -> ethereum.eth.v2.Version
+	15, // 4: ethereum.eth.v2.ProduceBlindedBlockResponse.data:type_name -> ethereum.eth.v2.BlindedBeaconBlockContainer
+	7,  // 5: ethereum.eth.v2.ProduceSyncCommitteeContributionResponse.data:type_name -> ethereum.eth.v2.SyncCommitteeContribution
+	7,  // 6: ethereum.eth.v2.ContributionAndProof.contribution:type_name -> ethereum.eth.v2.SyncCommitteeContribution
+	8,  // 7: ethereum.eth.v2.SignedContributionAndProof.message:type_name -> ethereum.eth.v2.ContributionAndProof
+	12, // 8: ethereum.eth.v2.GetLivenessResponse.data:type_name -> ethereum.eth.v2.GetLivenessResponse.Liveness
+	9,  // [9:9] is the sub-list for method output_type
+	9,  // [9:9] is the sub-list for method input_type
+	9,  // [9:9] is the sub-list for extension type_name
+	9,  // [9:9] is the sub-list for extension extendee
+	0,  // [0:9] is the sub-list for field type_name
 }
 
 func init() { file_proto_eth_v2_validator_proto_init() }
@@ -1204,30 +1065,6 @@ func file_proto_eth_v2_validator_proto_init() {
 			}
 		}
 		file_proto_eth_v2_validator_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SubmitSyncCommitteeSubscriptionsRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_proto_eth_v2_validator_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SyncCommitteeSubscription); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_proto_eth_v2_validator_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ProduceSyncCommitteeContributionRequest); i {
 			case 0:
 				return &v.state
@@ -1239,7 +1076,7 @@ func file_proto_eth_v2_validator_proto_init() {
 				return nil
 			}
 		}
-		file_proto_eth_v2_validator_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_eth_v2_validator_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ProduceSyncCommitteeContributionResponse); i {
 			case 0:
 				return &v.state
@@ -1251,7 +1088,7 @@ func file_proto_eth_v2_validator_proto_init() {
 				return nil
 			}
 		}
-		file_proto_eth_v2_validator_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_eth_v2_validator_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*SyncCommitteeContribution); i {
 			case 0:
 				return &v.state
@@ -1263,7 +1100,7 @@ func file_proto_eth_v2_validator_proto_init() {
 				return nil
 			}
 		}
-		file_proto_eth_v2_validator_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_eth_v2_validator_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ContributionAndProof); i {
 			case 0:
 				return &v.state
@@ -1275,7 +1112,7 @@ func file_proto_eth_v2_validator_proto_init() {
 				return nil
 			}
 		}
-		file_proto_eth_v2_validator_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_eth_v2_validator_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*SignedContributionAndProof); i {
 			case 0:
 				return &v.state
@@ -1287,7 +1124,7 @@ func file_proto_eth_v2_validator_proto_init() {
 				return nil
 			}
 		}
-		file_proto_eth_v2_validator_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_eth_v2_validator_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetLivenessRequest); i {
 			case 0:
 				return &v.state
@@ -1299,7 +1136,7 @@ func file_proto_eth_v2_validator_proto_init() {
 				return nil
 			}
 		}
-		file_proto_eth_v2_validator_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_eth_v2_validator_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetLivenessResponse); i {
 			case 0:
 				return &v.state
@@ -1311,7 +1148,7 @@ func file_proto_eth_v2_validator_proto_init() {
 				return nil
 			}
 		}
-		file_proto_eth_v2_validator_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_eth_v2_validator_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetLivenessResponse_Liveness); i {
 			case 0:
 				return &v.state
@@ -1330,7 +1167,7 @@ func file_proto_eth_v2_validator_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_proto_eth_v2_validator_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   15,
+			NumMessages:   13,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/proto/eth/v2/validator.proto b/proto/eth/v2/validator.proto
index 1144b56e76..0dbc118c12 100644
--- a/proto/eth/v2/validator.proto
+++ b/proto/eth/v2/validator.proto
@@ -60,21 +60,6 @@ message ProduceBlindedBlockResponse {
   BlindedBeaconBlockContainer data = 2;
 }
 
-message SubmitSyncCommitteeSubscriptionsRequest {
-  repeated SyncCommitteeSubscription data = 1;
-}
-
-message SyncCommitteeSubscription {
-  // The validator index to subscribe for.
-  uint64 validator_index = 1 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/prysm/v4/consensus-types/primitives.ValidatorIndex"];
-
-  // The sync committee indices to be subscribed to.
-  repeated uint64 sync_committee_indices = 2;
-
-  // The final epoch (exclusive value) that the specified validator requires the subscription for.
-  uint64 until_epoch = 3 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/prysm/v4/consensus-types/primitives.Epoch"];
-}
-
 message ProduceSyncCommitteeContributionRequest {
   // The slot for which a sync committee contribution should be created.
   uint64 slot = 1 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/prysm/v4/consensus-types/primitives.Slot"];
diff --git a/validator/client/beacon-api/BUILD.bazel b/validator/client/beacon-api/BUILD.bazel
index abfcf4be5a..87c0410870 100644
--- a/validator/client/beacon-api/BUILD.bazel
+++ b/validator/client/beacon-api/BUILD.bazel
@@ -106,7 +106,7 @@ go_test(
     deps = [
         "//api/gateway/apimiddleware:go_default_library",
         "//beacon-chain/rpc/apimiddleware:go_default_library",
-        "//beacon-chain/rpc/eth/helpers:go_default_library",
+        "//beacon-chain/rpc/eth/shared:go_default_library",
         "//beacon-chain/rpc/prysm/validator:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/primitives:go_default_library",
diff --git a/validator/client/beacon-api/beacon_api_helpers_test.go b/validator/client/beacon-api/beacon_api_helpers_test.go
index 7e7d1ddf47..3a722641d6 100644
--- a/validator/client/beacon-api/beacon_api_helpers_test.go
+++ b/validator/client/beacon-api/beacon_api_helpers_test.go
@@ -10,7 +10,7 @@ import (
 
 	"github.com/golang/mock/gomock"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/apimiddleware"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/helpers"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/shared"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v4/testing/assert"
 	"github.com/prysmaticlabs/prysm/v4/testing/require"
@@ -326,7 +326,7 @@ func TestGetIsSyncing_Nominal(t *testing.T) {
 			jsonRestHandler := mock.NewMockjsonRestHandler(ctrl)
 
 			expected := apimiddleware.SyncingResponseJson{
-				Data: &helpers.SyncDetailsJson{
+				Data: &shared.SyncDetails{
 					IsSyncing: testCase.isSyncing,
 				},
 			}
diff --git a/validator/client/beacon-api/beacon_api_node_client_test.go b/validator/client/beacon-api/beacon_api_node_client_test.go
index 4c00ac5f94..a7f9e807e0 100644
--- a/validator/client/beacon-api/beacon_api_node_client_test.go
+++ b/validator/client/beacon-api/beacon_api_node_client_test.go
@@ -8,7 +8,7 @@ import (
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/golang/mock/gomock"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/apimiddleware"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/helpers"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/shared"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v4/testing/assert"
 	"github.com/prysmaticlabs/prysm/v4/validator/client/beacon-api/mock"
@@ -176,7 +176,7 @@ func TestGetSyncStatus(t *testing.T) {
 		{
 			name: "returns false syncing status",
 			restEndpointResponse: apimiddleware.SyncingResponseJson{
-				Data: &helpers.SyncDetailsJson{
+				Data: &shared.SyncDetails{
 					IsSyncing: false,
 				},
 			},
@@ -187,7 +187,7 @@ func TestGetSyncStatus(t *testing.T) {
 		{
 			name: "returns true syncing status",
 			restEndpointResponse: apimiddleware.SyncingResponseJson{
-				Data: &helpers.SyncDetailsJson{
+				Data: &shared.SyncDetails{
 					IsSyncing: true,
 				},
 			},
diff --git a/validator/client/beacon-api/doppelganger_test.go b/validator/client/beacon-api/doppelganger_test.go
index 0a0478fd4f..c0db77829c 100644
--- a/validator/client/beacon-api/doppelganger_test.go
+++ b/validator/client/beacon-api/doppelganger_test.go
@@ -10,7 +10,7 @@ import (
 	"github.com/golang/mock/gomock"
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/apimiddleware"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/helpers"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/shared"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v4/testing/assert"
 	"github.com/prysmaticlabs/prysm/v4/testing/require"
@@ -108,7 +108,7 @@ func TestCheckDoppelGanger_Nominal(t *testing.T) {
 				},
 			},
 			getSyncingOutput: &apimiddleware.SyncingResponseJson{
-				Data: &helpers.SyncDetailsJson{
+				Data: &shared.SyncDetails{
 					IsSyncing: false,
 				},
 			},
@@ -143,7 +143,7 @@ func TestCheckDoppelGanger_Nominal(t *testing.T) {
 				},
 			},
 			getSyncingOutput: &apimiddleware.SyncingResponseJson{
-				Data: &helpers.SyncDetailsJson{
+				Data: &shared.SyncDetails{
 					IsSyncing: false,
 				},
 			},
@@ -189,7 +189,7 @@ func TestCheckDoppelGanger_Nominal(t *testing.T) {
 				},
 			},
 			getSyncingOutput: &apimiddleware.SyncingResponseJson{
-				Data: &helpers.SyncDetailsJson{
+				Data: &shared.SyncDetails{
 					IsSyncing: false,
 				},
 			},
@@ -414,7 +414,7 @@ func TestCheckDoppelGanger_Errors(t *testing.T) {
 	}
 
 	standardGetSyncingOutput := &apimiddleware.SyncingResponseJson{
-		Data: &helpers.SyncDetailsJson{
+		Data: &shared.SyncDetails{
 			IsSyncing: false,
 		},
 	}
@@ -494,7 +494,7 @@ func TestCheckDoppelGanger_Errors(t *testing.T) {
 			expectedErrorMessage:   "beacon node not synced",
 			inputValidatorRequests: standardInputValidatorRequests,
 			getSyncingOutput: &apimiddleware.SyncingResponseJson{
-				Data: &helpers.SyncDetailsJson{
+				Data: &shared.SyncDetails{
 					IsSyncing: true,
 				},
 			},
diff --git a/validator/client/beacon-api/submit_aggregate_selection_proof_test.go b/validator/client/beacon-api/submit_aggregate_selection_proof_test.go
index adfd5a2a4e..1b680f3d96 100644
--- a/validator/client/beacon-api/submit_aggregate_selection_proof_test.go
+++ b/validator/client/beacon-api/submit_aggregate_selection_proof_test.go
@@ -11,7 +11,7 @@ import (
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/golang/mock/gomock"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/apimiddleware"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/helpers"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/shared"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v4/testing/assert"
@@ -163,7 +163,7 @@ func TestSubmitAggregateSelectionProof(t *testing.T) {
 			).SetArg(
 				2,
 				apimiddleware.SyncingResponseJson{
-					Data: &helpers.SyncDetailsJson{
+					Data: &shared.SyncDetails{
 						IsOptimistic: test.isOptimistic,
 					},
 				},