{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77670607",
    "entityType": "User",
    "nonce": "0x7c96bee57a2aa909b2913a94ff62936c0afc3d4f24ab06b30199f582d61a13ce",
    "signature": "0x6d4ac9807a253229b7d7d975634e17a4defcce0e4b47d8daf49471b04cfbb6ef4c6a8da8f953c02fcb58ab9ccef01ab8c3ad67e460c4da227c94285da13234c31c",
    "signer": "0x8e843e061C77d2F2C655e7a2c77c231b0A89eBA1",
    "userId": "10318501"
  }
}