{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "504586521",
    "entityType": "User",
    "nonce": "0x6b3617041c8b8a49666859eb005794cf1afff2fc9d98a6207408f9e529e844b0",
    "signature": "0x85934a497a1bfe647ae946517e89a5d395f5f43b55b354ba05a2d4be8f1f318f0592c7507ca403e015b5ded0e17504c4b6c93ddef5b6a53b91b347236826c9041b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}