InternalReadonlyentityThe entity's MIME type (image/webp, video/mp4).
ReadonlynameThe entity name the upload is addressed by (<upload id>_0_<n>).
ReadonlyruploadThe x-instagram-rupload-params object, in the app's key order.
Readonlywaterfall
An upload exactly as the app sends it, when the caller (a posting screen) knows the wire: the entity's name and type, the rupload params and the waterfall id. It replaces what the brick would compute from the other fields.