You have one data:
block too much, try this:
alias: Test
description: Test Notification Commands
trigger: []
condition: []
action:
- service: notify.mobile_app_sm_g960f
data:
message: "command_activity"
title: 'google.navigation:q=arbys'
data:
channel: "com.google.android.apps.maps"
tag: "android.intent.action.VIEW"
mode: single
You also need to be on the latest beta of the conpanion app for this to work, see here for more details.