Extrinsic 19717-1

{
  "heartbeat": {
    "blockNumber": 19715,
    "sessionIndex": 328,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xfa6efb0740fd47f18ebbd8911e8940be379f39c48e2322e858f8bcef2b1bfa13df2fcac010679d447fadf9c861248b4ce0b9ff1099087ae22a5eebde6455d38e"
}