Harmony Hub Remote Help

Can anyone point me in the direction as to why this button is not “watching TV” using my harmony hub ?

      - type: entity-button
        name: Watch TV
        show_header_toggle: false
        icon: mdi:timer
        entity: remote.livingroom
        tap_action: 
            action: call-service
            service: remote.turn_on
        service_data:
            entity_id: remote.livingroom
            activity: "Watch TV"

Your indentation is wrong, it should be like this:

- type: entity-button
        name: Watch TV
        show_header_toggle: false
        icon: mdi:timer
        entity: remote.livingroom
        tap_action: 
            action: call-service
            service: remote.turn_on
            service_data:
              entity_id: remote.livingroom
              activity: "Watch TV"