thanks a lot.
I have been trying to reverse engineer it using the developer tools of browser.
Yes it seems that you first use uploads.json to upload it.
I our case the image is already in the system, as it is a photo embeded in a post, so I imagen we can get the id from the post.
And the you just need to use the PUT method to Foro OjoDigital - la comunidad hispano hablante de los amantes de la fotografía.?
with the uploaded_logo_id={image_id} with no other info?
Thans, will try.