{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3668",
    "entityType": "User",
    "nonce": "0xab4b8977766a06a1b40c9c0ffc92a00d49ff41f6583ceba32990542c5a2a88c9",
    "signature": "0xed1025b2138ab51bf8710b00629fb6d434267870cb6755bdd0a3073eb24be6f5262e0aeafdd0470054d6297e0becd07bd0675a24fe4215a968e25bb37e0313901b",
    "signer": "0x010c3D5aF33aa5Cbd1589eCf8Ea0F116848D598c",
    "userId": "943632467"
  }
}