Extrinsic 74199-1

{
  "heartbeat": {
    "blockNumber": 74198,
    "sessionIndex": 1236,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x28667abf53234cf0da1878f4ae11fa2aafd1ffa646d8ab8b20a0b2331aecab3e8b05b0806f24bcad67737895309bf8c0f9736480ba7531db660dba8ff4709789"
}