{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "504",
    "entityType": "User",
    "nonce": "0xdb2aaf97ea6bc667a5fe4c60408118c85e5983740990d98519b35daf6f4de0a5",
    "signature": "0x4e8fe2772a754c22ff3ed2620cfadf49b1b9b52ec162351ccdf50b24cba4176e330a388aa3866a67df867a6934d20ad4de335b87f478844759c1b8b39fff0dc51c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}