{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863521099",
    "entityType": "User",
    "nonce": "0x6cae99cf6b89d36f8e05e406cf892c171e0536dfbfddaefc78302d3916fe8cc0",
    "signature": "0x951ae553ee9b136416c0a351fb64af3eb7b95cd31024f86e01676f4c213cdbb72999dcd6b78508bb381e53b5cec6e30f7beede9ae443dc80edbbeaea2f0ebb181c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}