Google Home Notifications API

Google Home Supports Notification API Similar to TVs and the Companion Apps, I can’t seem to see any supported service we can call to send these notifications. I understand this would probably require cloud subscription (which I have) to talk to the Google Homes, but this is far better than the create.scene method to try and resume playback on google homes.

If anyone has got this working please let me know, or if you know if its on NabuCasa’s roadmap