GDPR - Mentions requirement question

Scenario is I need to surface all content in which a user was mentioned.  I don't see this available in the API (if it is, please show me), so wondering if I could just get some info on the database tables in order to query the data.

Basically, show Title and URL for anything where, for example, @JohnDoe was mentioned - my thought is to get John Doe's ContentId which would map to "MentionedContentId", and then is the MentioningContentId the content where it was entered?  And is the ContentTypeId the MentioningPropertyId???