As the title state, I am unable to get this automation to work:
trigger: play { artist }
data:
media_content_type: artist
media_content_id: >-
plex://{ "artist_name": {{ trigger.slots.artist }}, "shuffle": 1,
"library_name": "Music" }
target:
entity_id: media_player.group_home_speakers
The service call works with a static value in the service dev tools