permission allows your app to access the Ads Insights API
to pull Ads report information for Ad accounts you own or have been granted access to by the owner or owners of other ad accounts through this permission. This permissions also grants your app access to the Server-Side API
to allow advertisers to send web events from their servers directly to Facebook. The allowed usage for this permission is to provide API access to your ad performance data for use in custom dashboards and data analytics, or to send web events from your server directly to Facebook. You may also use this permission to request analytics insights to improve your app and for marketing or advertising purposes, through the use of aggregated and de-identified or anonymized information (provided such data cannot be re-identified).