{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5487",
    "entityType": "User",
    "nonce": "0xc88767fa2f1bad83c7e74eba0f28b2e68c25f0f8e68e541f8d6bd9750438b8c7",
    "signature": "0x5b21466f8a692cf6b52827c4e615cf03d0c8d3f05cf83cc39325b5d7aad65dce1bc7ee45c28bf109ad0fd607208e172fbb2ed3dd71c8282706f2fa40309c11d51b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}