{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103513693",
    "entityType": "User",
    "nonce": "0x0d97a21002554010e4c4e43149eec2cb842ccb87b320eb52dacc90c89a246a68",
    "signature": "0x8ba2ad0ebeb73e25fa61fc3e8c217146315101948965f54f1573861b5838229c1c578a01ab5efd8a5cd8ffc5744ac54230de084718776a54e6c1566d600378511b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}