I have a livestreaming (consumer) app with an associated Facebook page, and my goal is to broadcast streams from my app onto my Facebook page (live).
I have understood that part of the process to do this is getting a page access token from an admin of the page (like myself), who has granted my app the pages_read_engagement and pages_manage_posts permissions (which I have not done). However, in order to request those permissions, it seems like I would have to change the status of my app in Facebook (from being a consumer app), add those permissions, and undergo app review, even though I only want to request those permissions from a specific user. (This particular method is also not possible, since I already have 200,000+ users actively using my app.)
So my question is, how can I get a Facebook page access token for only a specific user of a specific page?