gistfile1.txt

var inputData = {
        "groups": [
            {
                "trail": "a002000000Ep07J",
                "adults": "2",
                "children": "3"
            },
            {
                "trail": "a002000000Ep07K",
                "adults": "4",
                "children": "5"
            }
        ],
        "food": "true",
        "giftCode": "CODE"
    };
$.ajax
({
    url: '/services/apexrest/price',
    data: inputData,
    success: function (resultData)
    {
        console.log(resultData);
    }
});