{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x53cd2580aad221a9921978d3b467889124765ff23eadfab884b9a63982a95501",
    "signature": "0xfc32460353a53c4a23bc00a8325805cee7c2acb13d86115a0745d2d738bb091a5a55012f504ad3c1897107ccd754bdb01b9fce911651283cf55779f858ccfcb01c",
    "signer": "0x543eBb69529118a88245331feFE7D7a07629967E",
    "userId": "503810898"
  }
}