{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x64a5c73a5efd23d79f3bac1066153ad283b8ee52d6d1e8ce16e604e60b174af0",
    "signature": "0x5d005f2905c6b578e2b83325b33bee09c232ef372bb81a889faad15bf65b1137001a57788bb463903cd93fd004be7571b7b9cb7a00b3ae54d9b145036cf7cbe01c",
    "signer": "0x4e9fadCAFBA77B302Ec8c4ec372c829A04D2FdcB",
    "userId": "82777500"
  }
}