I have an external service that I am using to POST a base64 encoded file to bubble. I want the file to be saved in Bubble storage and I want to be able to attach the file to a Thing so I can make it private. I am currently able to upload a file to bubble using a backend workflow but the file does not get attached to a Thing and it is not private. Also, the url for the file also gets saved as a cdn url as opposed to my domains url which is different compared to when i save a file through my application.