Extrinsic 6888-1

{
  "heartbeat": {
    "blockNumber": 6886,
    "sessionIndex": 114,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x1284d5cd9c36e0a4723d8f2e60c7d532317ffa1a0d30ba3ece5ba0098792490698b4497cd167548dceb162c614e241bdaa79921de01607a0ff8ce8870126558d"
}