Extrinsic 77603-1

{
  "heartbeat": {
    "blockNumber": 77602,
    "sessionIndex": 1293,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x6e1ecf4d62e1833b898ff4fc68ff04aed6b6bcc6a1ba5a49431730355e406d7f9522911ef051666a4ed4dbf9a23f5ea03299114023bce5bda28735db242ded89"
}