Action is to use when doRevisePreview requested, corresponding to chef_announcements-revise "eventSubmit_doRevisePreview" from revise view to preview view
This handles announcements, URLs should be like, /announcement/msg/{context}/{channelId}/{announcementId}
an example would be /announcement/msg/21b1984d-af58-43da-8583-f4adee769aa2/main/5641323b-761a-4a4d-8761-688f4928141b .