Extrinsic 54404-1

{
  "heartbeat": {
    "blockNumber": 54403,
    "sessionIndex": 906,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x70616b9236d0b440d146681ed0c2c1c22078d921e265a02d539997f01ce9d17c0bac7688302fbe2cb88cad57c8c05219cd65123b54aea216f7016b3e49375784"
}