{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3",
    "entityType": "User",
    "nonce": "0x2a76fae87d1d9960f4c9254af6bf0cae06cebd6cf48558ab52ec40b43ec22124",
    "signature": "0x8625ae5b2e5b9cc7402051e1be4c556a2459ebaa8d58ef95e638cf674c3809ad069ad8313aaf67b6008d646b74be8c15c63b8892205396e8c14115cdd05120b71b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}