Extrinsic 55786-1

{
  "heartbeat": {
    "blockNumber": 55784,
    "sessionIndex": 929,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x4ef45e9eaa5753f67f2305b50afd05b8ce813b609dbc4ba75a0db8954fb6206e8b1c6a10bb95e670274bce894198a02f1a898d802138f43f9ab48cbce8f3d88b"
}