{
  "request": {
    "id": 28,
    "jsonrpc": "2.0",
    "method": "eth_getBalance",
    "params": [
      "0x8888f1f195afa192cfee860698584c030f4c9db1",
      "-0x10"
    ]
  },
  "response": {
    "jsonrpc": "2.0",
    "id": 28,
    "error": {
      "code": -32602,
      "message": "Invalid block number params"
    }
  },
  "statusCode": 200
}