code: def show(ctx, short_name):
      
      wva = get_wva(ctx)
      subscription = wva.get_subscription(short_name)
      cli_pprint(subscription.get_metadata())
docs: Show metadata for a specific subscription
  
  Example:
  
  \b
      $ wva subscriptions show speed
      {'buffer': 'queue', 'interval': 5, 'uri': 'vehicle/data/VehicleSpeed'}