Google are proactively asking business owners to keep their Knowledge Graph information up-to-date, by directly suggesting edits.
Importance: (Webmasters and "Official Representatives")
Recommended source: Successful SEO Guide
In an interesting move, Google have begun to ask people who they deem as "Official Representatives" of a topic, if they would like to request changes to the Knowledge Graph card.
It came to my attention yesterday when SEJ published a tip from a reader, that when signed into a Google Account associated with a Google My Business page, the below option appeared.
Clicking edit, will move you onto this screen...