I'm using DataTables like this:

                table = $('#tblRunHistory')
                    .DataTable({
                        paging: true,
                        ajax: {
                            url: '@Url.Action("GetRunsJavaScriptArray")',
                            dataSrc: 'Runs',
                            type: 'GET',
                            rowId: <???>,
                            cache: false,
                            async: true,
                            data: function(d) {
                                d.Company = $('#ddlArchiveCompanies').val();
                                d.TimeZoneOffset = new Date().getTimezoneOffset();
                            }
                        },
                        searching: false,
                        info: true,
                        order: [[0, 'desc']],
                        columns: [
                            { title: "Id", searchable: false, data: [0] },
                            { title: "Company", searchable: false, data: [1] },
                            { title: "State", searchable: false, render: renderState, data: null, className: 'details-control' },
                            { title: "Start", searchable: false, data: [3] },
                            { title: "End", searchable: false, data: [4] },
                            { title: "Candidates", searchable: false, data: [5] },

and

        public async Task<ContentResult> GetRunsJavaScriptArray(int timeZoneOffset, string company)
        {
            var runs = await ManagementServiceClient.GetArchiveRuns(company);

            var runArray = new JArray(
                    runs.ArchiveRuns.Select(run =>
                    {
                        var start = run.Start.ToString("d", CultureInfo.CurrentCulture);
                        var end = run.End.ToString("d", CultureInfo.CurrentCulture);

                        return new JArray
                        {
                            new JValue(run.Id), // 0
                            new JValue(run.Company),
                            new JValue(Localize(run.State)),
                            new JValue(start),
                            new JValue(end),
                            new JValue(run.ItoCandidateCount), // 5
                            new JValue(run.ItoRecordsConsolidated),
                            new JValue(run.ItDeletedRecordCount),
                            new JValue(run.PercentArchiveComplete.ToString("N2")),
                            new JValue(run.State),
                            new JValue(run.ErrorMessage), // 10
                            new JValue(run.ItoRecordsRestored),
                            new JValue(run.ItoRecordsConsolidated > 0 ? (100 * run.ItoRecordsRestored / (decimal)run.ItoRecordsConsolidated).ToString("N2") : "0.00")
                        };
                    }));

            var runInfo = new JObject(
                    new JProperty("Runs", runArray),
                    new JProperty("IsRunning", runs.IsRunning));

            return Content(runInfo.ToString(), "application/json");
        }

I'm trying to maintain the users selection when the data is refreshed.
How do I configure/set the rowId: property appropriately in this case?