Extrinsic 41554-1

{
  "heartbeat": {
    "blockNumber": 41552,
    "sessionIndex": 692,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x121dfd1d1b54895c24d595842b1beb1e73b452de5670b2c768f2a6527529400255b8f37118cf722308ea382afcec44ac85c783452e01f352b416bce62ca4eb84"
}