Extrinsic 76603-1

{
  "heartbeat": {
    "blockNumber": 76597,
    "sessionIndex": 1276,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xa676a8c1ba75884c95119f0c32fec6b7b5035178459e272b8f6f7159c788fa6e57c7251614f615ca77ccd26823dd1fb60e0a46cb57a27970c98327516e0a5b83"
}