{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17983",
    "entityType": "User",
    "nonce": "0x938c0e737be34092199b5c2aee6b1a6df945318aff3396650b26cabfc7b1b222",
    "signature": "0x939240e8cfe1742e36c2c1cda3d71ad9426259e7ea62cc85175b4af3c1178d846dddaaa80bfa97447fbebe311f58f3446e40ecb8a9cd7f70dcf0fd65a8c708111c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}