Extrinsic 63888-1

{
  "heartbeat": {
    "blockNumber": 63887,
    "sessionIndex": 1064,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xa4a806fe4d21a84cfe09db7f4822dfa33c2764050bf8b7ffabb5fc8a33699464d89003f1b47f98c09a6594e7913d64a10c543fb8825fb377a09545569e3e3982"
}