Extrinsic 53954-1

{
  "heartbeat": {
    "blockNumber": 53953,
    "sessionIndex": 899,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xd8cf27e6fb35850ad909bafa92cc0ddb30bfeba297af8a21feae34e4190dbc236d86d360520103ae8a5c9955cd975cc05f7a2f62cece282a10847f2aaef62689"
}