{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xf988e57f4fa20c904087b4fb47f95366ab228aa91ca18b75efbec5a9bfa7ea0b",
    "signature": "0x3ac8eb93a13303156678ade47adfbe878673298424e2d7520884097fabd7ea5a05699722d7604be4729d6a14b23abd9ba74652c5cb75e3cbbeea01f52c3438f01c",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}