var arr = new Array();
    for (d in items) {
        var itemID = items[d].id;
        arr.push(itemID);
    }
    var d;
    var a = JSON.stringify(arr);
...
        var sqry = '{' +
                '"listTitle": "' + listTitle +
                '", ' +
                '"itemIDs": "' + a +
                '"' +
                '}';

        $.ajax({
            url: url,
            dataType: "json",
            type: "POST",
            async: false,
            data: sqry,
            contentType: "application/json; charset=utf-8",
            dataFilter: function (data) { return data; },
            success: function (data) {
            },
            error: function (ex) {
                alert(ex.responseText);
            }
        });

[ServiceContract]
    public interface IDAXServiceJSON
    {
        [OperationContract]
        [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Wrapped)]
        void DoBulkRequestIssuance(string listTitle, object[] itemIDs);
...
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]
    public class Service1 : IDAXServiceJSON
    {
        public void DoBulkRequestIssuance(string listTitle, object[] itemIDs)
        {