4. Publish Reel: https://graph.facebook.com/v25.0/{fb_page_id}/video_reels?access_token={fb_page_access_token}&video_id={video_id}&upload_phase=finish&video_state=PUBLISHED&description={facebook_message}&appsecret_proof={fb_appsecret_proof}

From previous step {video_id}

echo -n “FB_PAGE_ACCESS_TOKEN” | openssl dgst -sha256 -hmac “9321fa6df4b4112d66b24fdac92f1eba” | sed ‘s/^.* //’