Extrinsic 19069-2

{
  "heartbeat": {
    "blockNumber": 19067,
    "sessionIndex": 317,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xa0c3a932654e591240ff6d4bfc63bc139bd878aada43ef02ec426a82d8184b31499de33e8eba0bc317c98514a06c1b5355c37a6727048ae1da858b94421d0a89"
}