Extrinsic 40900-1

{
  "heartbeat": {
    "blockNumber": 40898,
    "sessionIndex": 681,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xea5ac74f3366a03622f790dc43c42da2f7e9631bfc6a8a9d44480f8bba8be51fc1465f21d8b250e6ac5059b231d976a4b284a4239a2f850cfde59efd85982f8f"
}