Extrinsic 44615-1

{
  "heartbeat": {
    "blockNumber": 44614,
    "sessionIndex": 743,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x38ffd339159e72abad3a2931ed9a0ffefbdfe45ce485d76d903c359cb786f57bbf8102c487c8047c8ffd637e53343651eedc93b0eb75aff721323e20ac7c3383"
}