call_method:
  description: Call a custom Squeezebox JSONRPC API.
  fields:
    entity_id:
      description: Name(s) of the Squeezebox entities where to run the API method.
      example: 'media_player.squeezebox_radio'
    command:
      description: Command to pass to Logitech Media Server (p0 in the CLI documentation).
      example: 'playlist'
    parameters:
      description: Array of additional parameters to pass to Logitech Media Server (p1, ..., pN in the CLI documentation).
      example: ["loadtracks", "album.titlesearch="]