data = { aside: 600 };
$.ajax({
    data: data,
    type:'PUT',
    contentType: 'application/json',
    dataType: 'json',
    beforeSend: function(xhr) {xhr.setRequestHeader('X-CSRF-Token', $('meta[name="csrf-token"]').attr('content'))},
    url:'/administrators/' + admin_id + '.json',
    error: function(event, jqXHR, ajaxSettings, thrownError) {
        $('#activity').prepend('<li>Failed to update admin layout</li>');
    }
});