https://developers.facebook.com/docs/instagram-platform/instagram-graph-api/webhooks#step-2--enable-page-subscriptions

See reference and API I enabled page subscriptions via , but the Instagram Story Insights webhook was never sent to the expected callback URL.

POST
"https://graph.facebook.com/v19.0/{page-id}/subscribed_apps?subscribed_fields=feed&access_token={page-access-token}

Add prerequisites. - "Configure Webhooks Product" completed - "story_insights" is already subscribed - App mode is "Development" - The application for "Advanced access" in "Permissions and Functions" has not been completed.

I don't know if the request parameters for "enable page subscription" are different, if the target endpoint is different, or if the settings are missing, so please help me.