Passing nested objects / arrays into a bootstrap modal

LostControl

I'm using DataTables and one of my data contains nested objects / arrays and I want to display that object in a bootstrap modal, when user clicks the button.

Json:

updatecases: [
0: {Id: 15, RMAnummer: 795, DateTimeUpdates: "/Date(1556263322883)/",…}
1: {Id: 16, RMAnummer: 795, DateTimeUpdates: "/Date(1556267987163)/",…}
2: {Id: 17, RMAnummer: 795, DateTimeUpdates: "/Date(1556268003016)/",…}
3: {Id: 18, RMAnummer: 795, DateTimeUpdates: "/Date(1556272425950)/",…}
] 

DataTable:

$('#OrdrerList').DataTable({

    "processing": true,
    "serverSide": true,

   ajax: {
        url: '@Url.Action("GetOpenRMA", "User")',
        dataType: 'json',
        contentType: 'application/json; charset=utf-8',
        data: 'dataSet'
    },

    columns: [

        { data: "Status" },

        {
            data: "updatecases",
            "render": function (data, type, row, meta) {

                var output = "";

                $.each(data, function (i, v) {

                    if (data.length > 0) {
                        output += "<br> ";
                    }

                    output += v.DateTimeUpdates;
                    output += v.LastUpdatesName;

                })

                return output;
            }
        },
    ]
});

I did some research, but still no luck:

I created the function :

function RMAHistorik(data) {

var output = "";

$.each(data, function (i, v) {

        if (data.length > 0) {
            output += "<br> ";
        }

        output += v.DateTimeUpdates;
        output += v.LastUpdatesName;

    })

    return output;
}

And I modified my DataTable :

//DataTable stuff...,

{
   data: "updatecases",
   "render": function (data, type, row, meta) {
    return '<a data-toggle="modal" data-target="#mymodal"  onclick="RMAHistorik(' + "'" + data + "'" + ');" href="' + row.Id + '" data-id="' + row.Id + '">' + row.Id + '</a>';

}

}

Her is the code for opening modal, but I don't know how should I extract the data from my function into modal:

$('#mymodal').on('show.bs.modal', function (event) {
    var link = $(event.relatedTarget) // link that triggered the modal
});

Can anyone please help me or point me into the right direction! or share some example from archive on something like this.