{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x682ea44011ffdda8f42f8a4de8f70f00d86394df8e0b7f02e2e85ce8f32e1084",
    "signature": "0xa45cec968a469050c243b18cad61fe9055a3df448ece449af8d7ed7c30fa8e43222a78f12de72a44e4814c0fe2d43c717ed4d94236cb0cfd2ebc5958dea8baf91c",
    "signer": "0x99E5e91bd122b44C2999e59d7bDbD2A1353872d8",
    "userId": "958334581"
  }
}