It seems that this schema contained a userAgent field. We have tracked this same data via the :m:Schema:EventCapsule for a long time. This field should be removed from the event so that standard data cleanup purges can remove it with other sensitive capsule data. I've saved a new revision of the schema that removes the field. See https://meta.wikimedia.org/w/index.php?title=Schema:PageContentSaveComplete&oldid=12587727

This should be a simple change because the request is to simply remove the field and update the schema version.