Extrinsic 1418-1

{
  "heartbeat": {
    "blockNumber": 1417,
    "sessionIndex": 23,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xa26cdb2266e9022b88a9e28177f8b79716aef5235f3c7bd54f36372726b2135fe623f0cb148e84f7e8b160f240cdf353ad0ca61071c51cf3e51dc80fe3394180"
}