{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xea0cf5a2068d215d203f8edfb79d4bca02f9b87984f9a9a75d085093fb5ce2cb",
    "signature": "0x2bf0c7e011efbd6dcdd466f5b6ee990b620d0fc65a0654c97a6a54f7793b76b3054f8b05ee83d095ce582a82e435c528a03418be2d1d3700ce1852a6236af77d1c",
    "signer": "0x9DC51c89EB69CC9c54d44521443ac750aaBf3c18",
    "userId": "759573568"
  }
}