Edit Custom Entity from a View

I have a custom entity which is displayed in a View. I have made one of the View fields a link with a url admin/projects/manage/[id] .
This is the url of the administration page used to amend the entity via the back end. All is good except when I save the entity I am returned to the manage page, rather than the View.

What do I need to do to get back to the View ? I am trying to replicate the nice behaviour that follows with a content type with Colorbox installed. You get a View option to display the node in a Colorbox pop-up. Nothing like this with entities it seems !

I guess I need another form to handle the entity save with a callback to the View page, rather than the admin page. Is this the way to go ? Any suggestions appreciated. Thanks.

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Source: https://www.drupal.org/taxonomy/term/4/feed