Extrinsic 17749-1

{
  "heartbeat": {
    "blockNumber": 17747,
    "sessionIndex": 295,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xb6b8625c8ff0be82975e87509ba41c4fa873e149a10d1af97f2bb01682648e1017810578e1fc1cfe33ab9e7861f5a6a9d9877e9b4ec4853e69e2fad031fae889"
}