{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584616263",
    "entityType": "User",
    "nonce": "0x510bce53859e1aa736f08a02086e150ac4e127fd37f425ff0f1a4937a14b8359",
    "signature": "0x103bbcb0e1883f9f2283df46a91681dd413a16e7a397ba89e94603005826862c325d322c79e005f1c41bac18251e0b62b7d9d7312cfef1f751c10eecce56665c1c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}