{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28155",
    "entityType": "User",
    "nonce": "0xa5396d8b2309d185d29d3ae7ba79cce65cce30ea5554bdcb65dc996a65d2573b",
    "signature": "0x29cf9a5608c3aa2c391c5fed293198dd56a3442cf4fecec01c7b1d1a56df2ef3283b628f2a108aa9998113cb67d711bdbe601d8a165b8dca964285927bd0c42d1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}