Minimalist UI Welcome Scenes card... but how to actually activate scene?!

hi folks, trying to implement the Welcome Scenes Card from Minimalist UI, but getting frustrated that doc don’t clearly show an example of how to actually use scenes with this card. This is what I have that isn’t working…

    - type: "custom:button-card"
      template: "card_welcome_scenes"
      #triggers_update: input_boolean.<Your_boolean>
      #entity: input_boolean.<Your_boolean>
      variables:
        # ulm_card_welcome_scenes_collapse: input_boolean.<Your_boolean> #OPTIONAl --> uncomment also entity or triggers_update
        # ulm_weather: "weather.YOUR_WEATHERPROVIDER"
        entity_1:
          entity_id: "scene.tv_time"
          icon: "mdi:television" 
          name: "TV" 
          color: "blue"
          tap_action:
            action: call-service
            service: scene.turn_on

Where am I going wrong?!

I am struggling myself as well. However ‘tap_action’ is not an allowed entity variable.
https://ui-lovelace-minimalist.github.io/UI/usage/cards/card_welcome_scenes/#entity-variables

I am looking for an option to toggle either an automation or a script with the Welcome Card and I think we should use the ‘service_data’ variable. Not sure yet how it works as the documentation does not include an example.