Extrinsic 31285-1

{
  "heartbeat": {
    "blockNumber": 31284,
    "sessionIndex": 521,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x7eb4eb55a58b560c838a725a49bd28703ac82cb9993a3b6ae60fe7120b3ac81f6ee8b24fc95dab3700d6bb0452362ec9a60af81e7b4a72e63fb2d941d7832d8e"
}