Extrinsic 61904-1

{
  "heartbeat": {
    "blockNumber": 61903,
    "sessionIndex": 1031,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xd2e8aacb97c41958e823bdc229a23aae52de0c664fbd40d6d528391db8ea8e37d424b2cb1066ea683731c86d7e5a8bccfd745a9d522d454834ae78637bf72486"
}