public DataManager()
{
UserItems = _LoadJsonFile <UserItem>("australian_users_items.json");
Bundles = _LoadJsonFile <Bundle>("bundle_data.json");
UserReviews = _LoadJsonFile <UserReview>("australian_user_reviews.json");
UserItems = UserItems.GroupBy(x => x.user_id).Select(x => x.First()).ToList();
}
