Extrinsic 19044-1

{
  "heartbeat": {
    "blockNumber": 19042,
    "sessionIndex": 317,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xbc18fea8b5ea5c4fc27767598125e4c502c6ef5b6f44e6fd127a68bf4861b37a7a3e60918483c049ddd1fd3e7f25f1008ee6e6d014bd0fc10162c81c8461208e"
}