Extrinsic 51869-1

{
  "heartbeat": {
    "blockNumber": 51868,
    "sessionIndex": 864,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xfc52fcbd01de6c8b5c854d44c705078c98c674d09ee3516e5d005900dad45318eacdf4460493a32cbb8f34a3fbc27bb3c59d1da143647c4a7c1ab00c6e129589"
}