Extrinsic 40308-1

{
  "heartbeat": {
    "blockNumber": 40307,
    "sessionIndex": 671,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xc874d78d0c9d8e12d5aa099d4865b32192bb9eab1d889d5e4d87e1d42af28956f60df68aa302b805335aecdd724b6878f1bb21fe99b7bec169815724c6f9d786"
}