Hi, I have built a scene on solaris using usd files but now I want to use a rig into solaris to manipulate it (rig is a hda file). Someone knows if this method is appropiate or what would be the right way to do it?

Thanks

Solaris is not an environment for rigging or character animation. You would still do those things in SOPs/OBJ, then import the result into LOPs to be exported as animated meshes saved to USD files (or rendered directly from LOPs without saving to USD, depending on your use case).