Exporting user created gameobject to folder on server as obj WebGL?

I've seen numerous questions/answers on how to export a gameobject from within the editor during development, but nothing as far as the user saving their created content. Here's what I am looking to do. I have a single scene where the user can create their own gameobject by customizing color, texture, etc. When they hit the save button, I would like to export their creation as an obj file within a folder on my server. This is a WebGL app that will be hosted on my website. Any ideas or references on how I can go about doing this? Thank you in advance. <-- I say that out of respect.