NOTE: unlike sibling endpoints (following, follower, mypixiv, related,
recommended), the live pixiv API returns this list under a users key with
plain PixivUser objects, not user_previews with PixivUserPreviewItem
(confirmed by direct API verification; no user_previews wrapper is present
on the wire for this endpoint).
Page response for GET /v2/user/list.
NOTE: unlike sibling endpoints (
following,follower,mypixiv,related,recommended), the live pixiv API returns this list under auserskey with plainPixivUserobjects, notuser_previewswithPixivUserPreviewItem(confirmed by direct API verification; nouser_previewswrapper is present on the wire for this endpoint).