Extrinsic 41509-1

{
  "heartbeat": {
    "blockNumber": 41507,
    "sessionIndex": 691,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xc6865a653ba976a7cd8724ee08d16c2cb0aec84431bacbd0a15bfe6d0e59a850db814a2d2534564fa9961abb22a8f99c5d59e04b22648c2d4d6c96bbe7c8a689"
}