Extrinsic 23476-1

{
  "heartbeat": {
    "blockNumber": 23474,
    "sessionIndex": 391,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x6280fc6d87262aafdfc665bcb2fd2e1c04544d438de6178b50483635385ab271a1b68280886284ae418f26eb40b2fcce78a48bf89e8a124f248a6a8c92866c8a"
}