Use JsonIgnore on certain inherited properties

I have a base class like this-ish:

public class Baseclass
{
   public string Id { get; set; }
   public string Type { get; set; }
   public string Name { get; set; }
}

...and many classes that inherit these properties, like this-ish:

   public class Thing: Baseclass
    {
     public string Size{ get; set; }
     public string Color{ get; set; }
     public string Smell{ get; set; }
    }

Now, I don't want to serialize all of these properties (mvc/jsonresult), so I use [JsonIgnore] on the properties of a class I want to exclude, and that works fine. The problem is that I don't want to serialize all the inherited properties for a class either. I've asked around and gotten the following answer:

Ex: I don't want to serialize the inherited Id from Baseclass in Thing.

I should make Id in Baseclass virutal:

public virtual string Id { get; set; }

and add the following to the Thing class:

[JsonIgnore]
public override string Id { get; set; }

...but this doesn't work, I'm afraid. I can get around it rebuilding the class hierarchy. but I would prefer a simpler solution. Any suggestions as to why this solution didn't work or alternatives to exclude certain inherited properties?