Is it possible to dynamically add .fbx files to a unity project from a database during run time

Hi, this is my first time posting on the unity forums. Normally I can find what i need but in this case im not so sure where to even start looking. Without saying too much about my project, I want to have a unity game run in the browser. A user logs in and gets certain animations (.FBX files) that they will have in their instance. I want a user to only see the animations associated with their login. I dont really want to have just everything in the app since its rather sloppy and I want it to be more dynamic so that I wont have to re build the program everytime I create a new animation for a user. So my question is in run time can unity import animations during runtime. I can handle it getting the information but I want to know if it is even possible to do what im trying to do here. Thanks