Extrinsic 17227-1

{
  "heartbeat": {
    "blockNumber": 17226,
    "sessionIndex": 287,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x6cbc075a6ac517ddacd35e5cebfd9371da5bfa15694b43f305c945e7d7bbe65b1c0282deb17e47963bb0db97fe64f2ed68551afd292a20134b077271a63f2989"
}