How to write image to tables through API

I know post allows us to write record into a tulip tables. Is it possible to write an image to Tulip through API calls? To be more specific, i am not talking about writing an image link to Tulip tables, but automatically upload an image through API calls?

If you use Base64 format you can store image with text and a standard payload.

This sounds very encouraging. Do you have an example of constructing the payload to send via the Tulip API to update a table record?