{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1685453",
    "entityType": "User",
    "nonce": "0xe5c23481308d39ade864802c5a260a425c815b5cc28b6719c4f73fc737e4e415",
    "signature": "0x4bf143a18b1311c3c3b4f4c2c1574e0e015cf632095c087cf8f490b4b72f386458ebd1392d61237b8da5ef8688ce7cd7322fa6513269b90fa4894a72f7689fbe1c",
    "signer": "0x1Cd621cc0fa2899b64374Ba9EA39dE50a450d6f9",
    "userId": "124826044"
  }
}