[FromBody] Model and Guid Display in Web Api 2

I am using web api 2 and I found strange Guid display behavior. Here is my definition of the problem

This is my example model

public class MyModel
{
    public Guid Id { get; set; }
    public string Name { get; set; }
}

      

        
        
        
      

    

I have the following actions on my controller where I have MyModel as input [FromBody]

[HttpPost, Route("create")]
public IHttpActionResult Create([FromBody]MyModel model)
{
    // some implementation
}

      

        
        
        
      

    

Everything works fine, not Guid. When I post the JSON of the new MyModel to the request body:

{
    "Id":"1d93dfa2-sb34-403d-a766-bdcf1cf47a71",
    "Name":"name"
}

      

        
        
        
      

    

The name is set correctly as "name", but the Guid is generated as a new Guid each time.

What could be causing this problem? How do I set the correct display of the Guid value?