{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43323",
    "entityType": "User",
    "nonce": "0x5d04fa4488ee8019f2bed779b5c6395c2a521aa32dcd7f73c3dc2eba2d4a9cc6",
    "signature": "0x896e6c7043af55ab29cba42b1c2438aed7bbc06699ac0522f44d9769cd53073176bb8e7897cf0252cff129c951d7888e79a34fb553bd53dfdd00a9472db252951b",
    "signer": "0x3ce98eEb540e9f90ae2BB6588CEc86ABa4099408",
    "userId": "8601343"
  }
}