cesium.js json information

I am displaying a 3D model in b3dm format via cesyum.js. I want it to give the information I want when some parts of the 3D model are clicked with the mouse. My model is coordinate.

For this, I have parcel boundaries in json format. But they are in 2d form. What I am trying to do is to make the information appear when I click with the mouse where the json file corresponds, with the help of this json file that matches the 3d model coordinately.

So far, I have uploaded the information to the json file and published it through ceisum iona, but it must cover my model in 3D.

Your help is very valuable to me