Server side processing removing all data from JSON that isn't used in any column

When using serverSide: true all fields that aren't used by one of the columns are automatically removed from the JSON that's stored under table.data() and cannot be accessed for further processing.

For example I have some custom rendering logic, that adds a star depending on another value's boolean.

table = $('#snowflake').DataTable({
  ajax: {
      url: "/api/entries/",
  },
  processing: true,
  serverSide: true,
  searchDelay: 1500,
  rowId: 'id',
  order: [[0, 'asc']],
  columns: [
    {
      data: 'order',
      className: 'reorder',
    }, {
      data: "name",
      name: "name",
      render: function(data, type, row) {
        if (row.enabled) {  // row.enabled will be undefined
          return data + ' *';
        }
        return data;
      }
    },
  ],
});

JSON returned from server:

[{
    "id": 1,
    "order": 1,
    "name": "Hello world",
    "enabled": true
}, ...]

However because enabled does not have a definition in columns it's not accessible by the name render method, as it's automatically discarded/set to undefined by DataTables.
Any idea how to keep all data returned from the server – just like it would, if we were using the normal, local non-serverSide mode?

PS: More on a sidenote; is it possible to call table.draw() without fetching the data from the API again? I just want to update column visibility.