Extrinsic 34294-1

{
  "heartbeat": {
    "blockNumber": 34293,
    "sessionIndex": 571,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x18e3c33f67260d1953d187d2c89b51fb88bfc0aa4ed43c89ea995a466027de443e8f1b3107801c682806b67b9704593175a6a24a125e62ce9ead712296504586"
}