Extrinsic 39503-1

{
  "heartbeat": {
    "blockNumber": 39501,
    "sessionIndex": 658,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x788df86372bbbfb4b3ab98c65ec9fe8cb0096b92b4e866b328eff81a4bb78b3d457a7c52592e0adcefaf63ad632c76b5a7d7177fa29aae5b11accae2bb2e2a83"
}