Can we create new variables or properties from the inspector?

What I am doing is getting data from JSON file and in this Item class I am adding its properties one by one in the script.

public class Item {

 [JsonProperty(PropertyName = "ID")]
 public string id { get; set; }

 [JsonProperty(PropertyName = "Name")]
 public string name { get; set; }

}

It works fine. But I don't want to add all these properties again and again in the script when the data from JSON files changes. Is there a way that I can make only one generic property and use it to add more properties from the inspector? Like I can add property name in the inspector and it will generate another property inside script.

Please help me out. I really need to work this out.