Json generate $ref, $id and $content automatically, how do skip this?

[pesseba]

Hi when I save my json runtime in Unity my json some king of objects has $id parameter generated and the content has a lot of objects with $ref = {the id} in sequence. The problem is that every time I save and restore the json from file, the objects with $ref is increasing geometrically... So my file goes from 95 Kb to 79 Mb. How to prevent this behaviour?

In code I found just found a mention of these parameters: This is an object reference in part of a cyclic graph. There is some kind of object that generate this?