question

I am not sure of your question, tell us if anything was missed.

If you are trying to ignore property or field when serializing class, setting the NonSerialized attribute is the correct way in Unity. The following is an example:

void Start()  
{ 
	myclass obj = new myclass {num = 123123, a = "test1", b = "test2"};
	string json =
	JsonUtility.ToJson(obj); 
	print(json);  
}

public class myclass  
{
	public int num;
	public string a; 

	[NonSerialized]
	public string b;  
}

The output in the unity client is:

{"num":123123,"a":"test1"}
UnityEngine.MonoBehaviour:print(Object)
test:Start() (at Assets/test.cs:16)

as you can see string b is not serialized due to the [NonSerialized] label.

If it is deserializing JSON string to object and you are looking for a similar way to ignore some properties in the JSON, the answer is NO. JSON is pure data and any other keywords insides should be simple data. If there are specified needs, you can create a designated KVP like “_Serialized”: “(your data here)” or “_NonSerialized”: “(your data here)”. Then create a process to handle their values when receiving this JSON data.

Kindly reminder: this forum is for technical discussions or idea sharing on PlayFab. In terms of Unity or other aspects, you may find more information from official community forum.