Extrinsic 51580-1

{
  "heartbeat": {
    "blockNumber": 51579,
    "sessionIndex": 859,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x74cf5480165ce189930fb2921262e5c02209ec82b8bf9a70c0333b4bb7ad6554f6453160ff6cb946bb7068c195ee99a62350688dfe4b8a4594b605fa67805187"
}