{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x3bd460bf965323c5eb3db96098ffe4032e0669f032dab8363b6216de5c2187d8",
    "signature": "0x1a4b8b8b0fc0ee96ea43bf8f205dad213a4438c5a25ecf9b96a49db0115f5501392834d6628f6c39631640e6bf45f5a7a96a118cbc57e9933612f3652b641a011c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}