The list of capabilities required from the surface. Eg, ["actions.capability.SCREEN_OUTPUT"]
context
string
Context describing the content the user will receive on the new surface. Eg, "[Sure, I know of 10 that are really popular. The highest-rated one is at Mount Marcy.] Is it okay if I send that to your phone?"
notificationTitle
string
title of the notification which prompts the user to continue on the new surface.