Extrinsic 62321-3

{
  "heartbeat": {
    "blockNumber": 62319,
    "sessionIndex": 1038,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x62434adc33936f844cffcce0682e0d6ee03db040bf79130175399cf92c3ca378d121240ff0c2376ec1b346be3243515d3ceb7e489a020a99505a9e6361732882"
}