 MivaEvents.SubscribeToEvent('price_changed', function (product_data) { 
    console.log(product_data); 
}); 
 
//response Object
{
    "product_code": "shirt",
    "price": 10,
    "additional_price": null
}

	MivaEvents.SubscribeToEvent('price_changed', function (product_data) {
	console.log(product_data);
	});

	//response Object
	{
	"product_code": "shirt",
	"price": 10,
	"additional_price": null
	}