Extrinsic 178359-1

{
  "heartbeat": {
    "blockNumber": 178357,
    "sessionIndex": 2972,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x26ff6d600e032e956fa8dbadcc67e3abedf8a16e5c61f3cddcd2e5cc2beee33649567c79e93017f208526570fd1e9c56189907e0e96bce4c8c385fa5c69b8a8b"
}