Retrieves data about the instance of your app that's installed on a Wix site and data about the site itself. For example, to check whether the Wix user has installed a free or paid version of your app, or to check which apps made by Wix are installed on the site.
You must authenticate this method as a Wix app (REST | SDK).
To retrieve site.ownerInfo in the response, you must
have the READ SITE OWNER EMAIL permission scope in addition to
MANAGE YOUR APP.
You can only call this method when authenticated as a Wix app or Wix user identity.