<script>
fbq('track', 'AddToCart',
  {
    value: 2, // Price (or sum of prices if quantity is more than 1) for the product added to cart
    currency: 'EUR',
    contents: [ // Array with the product added to cart
      {
		'id': 'P12345',
		'title': 'Android Warhol T-Shirt',
		'item_price': 2,
		'category': 'Apparel/T-Shirts', // Up to 5 levels
		'brand': 'Google',
		'quantity': 1
      }
	],
    content_type: 'product'
  }
);
</script>