Extrinsic 51263-1

{
  "heartbeat": {
    "blockNumber": 51261,
    "sessionIndex": 854,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x74a45acd1f40736b95c26fce8f6f23e1fb7673645f0ac666759060b219d1af564407b134afaaa06b8a5eff63e4dd11cb6c63820d0e52012fa23eed5226847681"
}