{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "614394761",
    "entityType": "User",
    "nonce": "0xfe93a4f35a48728a797ed7d7c0b6ffba1baf60f2e82365ce0cce9fc179fcf9d5",
    "signature": "0x21ba804d846e2cdbadcd2bc9004befd793ad34dd8c27e84dfc5b8e648c885a610d1960a06112c8d804840c192c74ed8488b46d1061d5518bf3678ff7ccc1f0301c",
    "signer": "0x0d0E0D19797534AEF52736C60B52793E9f88e24F",
    "userId": "603294620"
  }
}