{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283535234",
    "entityType": "User",
    "nonce": "0x54244bef117e473452e3f6aa51b3563edc4cc8812b5c1852f3021e21fe6e790e",
    "signature": "0x5828f5b2a6580a0a689431f46d50249d9903f6ae03742b472b65cb9a3bfa8e060d4adeb0896b6331543d17e4f7b7a32d7b27faec4546fa7b854b973cd7cd2c391c",
    "signer": "0x1EEEf459C8e361773166d5681a5066659BC751D5",
    "userId": "210033902"
  }
}