diff --git a/validator/keymanager/remote-web3signer/internal/BUILD.bazel b/validator/keymanager/remote-web3signer/internal/BUILD.bazel
index 44657d8867..29f3b7b316 100644
--- a/validator/keymanager/remote-web3signer/internal/BUILD.bazel
+++ b/validator/keymanager/remote-web3signer/internal/BUILD.bazel
@@ -28,6 +28,8 @@ go_test(
     srcs = ["client_test.go"],
     deps = [
         ":go_default_library",
+        "//testing/require:go_default_library",
+        "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
         "@com_github_stretchr_testify//assert:go_default_library",
     ],
 )
diff --git a/validator/keymanager/remote-web3signer/internal/client.go b/validator/keymanager/remote-web3signer/internal/client.go
index 4d592b523b..26ef849dde 100644
--- a/validator/keymanager/remote-web3signer/internal/client.go
+++ b/validator/keymanager/remote-web3signer/internal/client.go
@@ -28,6 +28,11 @@ const (
 
 type SignRequestJson []byte
 
+// SignatureResponse is the struct representing the signing request response in json format
+type SignatureResponse struct {
+	Signature hexutil.Bytes `json:"signature"`
+}
+
 // HttpSignerClient defines the interface for interacting with a remote web3signer.
 type HttpSignerClient interface {
 	Sign(ctx context.Context, pubKey string, request SignRequestJson) (bls.Signature, error)
@@ -68,9 +73,17 @@ func (client *ApiClient) Sign(ctx context.Context, pubKey string, request SignRe
 	if resp.StatusCode == http.StatusPreconditionFailed {
 		return nil, fmt.Errorf("signing operation failed due to slashing protection rules,  Signing Request URL: %v, Status: %v", client.BaseURL.String()+requestPath, resp.StatusCode)
 	}
-
-	return unmarshalSignatureResponse(resp.Body)
-
+	contentType := resp.Header.Get("Content-Type")
+	switch contentType {
+	case "application/json":
+		var sigResp SignatureResponse
+		if err := unmarshalResponse(resp.Body, &sigResp); err != nil {
+			return nil, err
+		}
+		return bls.SignatureFromBytes(sigResp.Signature)
+	default:
+		return unmarshalSignatureResponse(resp.Body)
+	}
 }
 
 // GetPublicKeys is a wrapper method around the web3signer publickeys api (this may be removed in the future or moved to another location due to its usage).
diff --git a/validator/keymanager/remote-web3signer/internal/client_test.go b/validator/keymanager/remote-web3signer/internal/client_test.go
index 9fc3637f00..7796090f3a 100644
--- a/validator/keymanager/remote-web3signer/internal/client_test.go
+++ b/validator/keymanager/remote-web3signer/internal/client_test.go
@@ -10,6 +10,8 @@ import (
 	"net/url"
 	"testing"
 
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/prysmaticlabs/prysm/testing/require"
 	"github.com/prysmaticlabs/prysm/validator/keymanager/remote-web3signer/internal"
 	"github.com/stretchr/testify/assert"
 )
@@ -49,6 +51,35 @@ func TestClient_Sign_HappyPath(t *testing.T) {
 	assert.EqualValues(t, "0xb3baa751d0a9132cfe93e4e3d5ff9075111100e3789dca219ade5a24d27e19d16b3353149da1833e9b691bb38634e8dc04469be7032132906c927d7e1a49b414730612877bc6b2810c8f202daf793d1ab0d6b5cb21d52f9e52e883859887a5d9", fmt.Sprintf("%#x", resp.Marshal()))
 }
 
+func TestClient_Sign_HappyPath_Jsontype(t *testing.T) {
+	byteval, err := hexutil.Decode(`0xb3baa751d0a9132cfe93e4e3d5ff9075111100e3789dca219ade5a24d27e19d16b3353149da1833e9b691bb38634e8dc04469be7032132906c927d7e1a49b414730612877bc6b2810c8f202daf793d1ab0d6b5cb21d52f9e52e883859887a5d9`)
+	require.NoError(t, err)
+	sigResp := &internal.SignatureResponse{
+		Signature: byteval,
+	}
+	jsonBytes, err := json.Marshal(sigResp)
+	require.NoError(t, err)
+	// create a new reader with that JSON
+	header := http.Header{
+		"Content-Type": []string{"application/json"},
+	}
+	r := io.NopCloser(bytes.NewReader(jsonBytes))
+	mock := &mockTransport{mockResponse: &http.Response{
+		StatusCode: 200,
+		Header:     header,
+		Body:       r,
+	}}
+	u, err := url.Parse("example.com")
+	assert.NoError(t, err)
+	cl := internal.ApiClient{BaseURL: u, RestClient: &http.Client{Transport: mock}}
+	jsonRequest, err := json.Marshal(`{message: "hello"}`)
+	assert.NoError(t, err)
+	resp, err := cl.Sign(context.Background(), "a2b5aaad9c6efefe7bb9b1243a043404f3362937cfb6b31833929833173f476630ea2cfeb0d9ddf15f97ca8685948820", jsonRequest)
+	assert.NotNil(t, resp)
+	assert.Nil(t, err)
+	assert.EqualValues(t, "0xb3baa751d0a9132cfe93e4e3d5ff9075111100e3789dca219ade5a24d27e19d16b3353149da1833e9b691bb38634e8dc04469be7032132906c927d7e1a49b414730612877bc6b2810c8f202daf793d1ab0d6b5cb21d52f9e52e883859887a5d9", fmt.Sprintf("%#x", resp.Marshal()))
+}
+
 func TestClient_Sign_500(t *testing.T) {
 	jsonSig := `0xb3baa751d0a9132cfe93e4e3d5ff9075111100e3789dca219ade5a24d27e19d16b3353149da1833e9b691bb38634e8dc04469be7032132906c927d7e1a49b414730612877bc6b2810c8f202daf793d1ab0d6b5cb21d52f9e52e883859887a5d9`
 	// create a new reader with that JSON