{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0c9ac1398fa1b25a982f12e9b9be8f415689966845677e2318b22c324b3bd7eb",
    "signature": "0x552a973031b379149913ee83b7c5d9f421f3290e2a5924261cd8429386299f7c6072f249bef7e6b428545cfc14e3d14bdd0c945225a20e89e9eb40281776a3ef1b",
    "signer": "0x152997aF52343061900a376736c64660C14F200d",
    "userId": "746985041"
  }
}