Extrinsic 1062-1

{
  "heartbeat": {
    "blockNumber": 1061,
    "sessionIndex": 17,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xd2ac39c128ddfb2e71bc90b487a0ea3eae932535a5116ac7cafe8587d3c0a01a1b70c4b792f7346f47500b47cca67c414dfda42218788021e1bf587f7aa55384"
}