Button to Call Service for Spot cast

Hi, I’m trying to use a call service from spotcast to cast my music on google minis around my home since spotify card doesn’t not detect chromecast devices that is on my network.

What I’ve try so far is when i tried to call for service, as seen in the bottom image it works.

When I tried to create a button, I can’t seem to get it to work and I get this error. Any help to rectify the code would be great.

type: button
  action: call-service
  service: spotcast.start
entity: media_player.googlehome86

I happened to come across another post and found out a line “service_data” and added that in. That resolved my issue. Leaving the picture here in case anyone wants to do the same too.