How to add a lede (subtitle) to a view?

[andybroomfield]

Has anyone worked this out, would a custom views plugin be needed?
This is for the page header block.

[andybroomfield]

Just noting that $entitiy isn't populated with a $view object, I think as it's not passed in the right place in the route. It is possible be get the view_id and display_id though, so maybe a way forward there?