title: Generate Dynamic Key in Json
body: <p>In .net core I would like to generate a json as given below,</p>
  
  <pre><code>{
      "719A070E-4874-E811-9CCE-02152146006A":{
               "userId":"719A070E-4874-E811-9CCE-02152146006A",
                "Name":"Joe"
           }
  }
  </code></pre>
  
  <p>where 719A070E-4874-E811-9CCE-02152146006A is a Id which varies for every user. How can I define the class to the above json while serialize?</p>
  
  <p>Regards,
  Joe</p>