Extrinsic 3047-1

{
  "heartbeat": {
    "blockNumber": 3045,
    "sessionIndex": 50,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xc8ddbdefef621c12fe1be61645b8cf695e364963d561b011848849ee2b7e9965db75559aa452142c544d8e87ba4763dd2072ed71b91d5b33817d0779d74f058d"
}