{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337125448",
    "entityType": "User",
    "nonce": "0x2834b47b2029f63b6e4ae71041ca3833a80645354248a4efec73ef88ca6a058d",
    "signature": "0x88e588eb0883cc6a70ffa5bde0a08c439a61b5424b46954bae557300c739b643106ae84fdcc2fede5263ae54f8dfbcecdbd97473b456963c233a54e21e70edf61b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}