{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "787961301",
    "entityType": "User",
    "nonce": "0x8531d62b733a3814cff294ef90235091b046bbda60f49b7caab871907fa8df07",
    "signature": "0x19c5449c4ba6f1646c5c592a2ebc26f5ff278577beabee5823b3bad5df9bc6d601087cfe1402cdebecfcb1cdd58760891641d28a5b69ff27c3bb7dbf9cf006c91b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}