{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "748896412",
    "entityType": "User",
    "nonce": "0x60e6c294a92dbc3dac9880ed9ad8b057750735cdd492d89b8ca105162d1c31a1",
    "signature": "0x39825031bcce0715f71c327491842cf9b485b96406e95e4b743fb689871bb44d55811c49edf222614721c5ca84ce52ef97b98f09a2b61804c6e4b5d6856a065e1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}