def save_obj():
fbUser_obj = FBUser()
fbUser_obj.u_id = user_id
fbUser_obj.fb_id = fb_id
fbUser_obj.brand_name = brand_name
fbUser_obj.access_token = access_token
fbUser_obj.expires = token_expiry
fbUser_obj._id = FBUser.collection().insert(fbUser_obj.serialize())
return fbUser_obj
