{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcf671b35cf012f7a7c69110448d95ed9748e85b9d49794868b1017e972884c99",
    "signature": "0x4848613e1700d9e4ae3521b2fed5857720085340793106e0005aa444b8935a3c15b7305b837928fbf331cce942326a463c28627565213105196a9a6155ffe7a51c",
    "signer": "0x1EeF7f4505C388ca4a4B9A8fC01FcFa7c805D3c5",
    "userId": "17766667"
  }
}