{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb4397a9796a8c0d67efa981d6cf503f97a0935edce5e61551ae00b2cd4430592",
    "signature": "0xf828e68b18a0f500f2046c63336dc39c07f735c615924f3de2ee3b26b13fccb17d0cea7eb9c60e9e887e6e6121ec1fb39f522e6c474cf496c4b6d85fd4a7ba951b",
    "signer": "0x8209874eC619BAb8540cFccC7bA75C5C54267b25",
    "userId": "945804525"
  }
}