Unique identifier of the uploaded media item, returned from
createMedia. Pass this ID into any field that accepts a
media reference (logos, hero images, product images, etc.).
Original filename of the uploaded asset, preserved as
provided at upload time. Used for display in the media
library and as a hint when serving downloads.
Identifier of the organisation to upload this media item
against. Media is scoped per organisation so each customer's
library is isolated. The caller's API key must have access
to this organisation.