Create Data array for CakePHP using Javascript

Having trouble getting a data array in the correct format for Cakephp in Javascript. I'm making a scheduling calendar using Fullcalendar and I've gotten the events loaded into an array.

The external events are users dragged onto the calendar from another div and they transfer their name and userId. Next, the calendar is initialized and when a user is dropped onto it, the user is displayed on the calendar and added to the arrayOfEvents. This is the variable we're working with.

$(document).ready(function() { 
    /* initialize the external events -----------------------------------------------------------------*/
    $('#external-events div.external-event').each(function() {
        // create an Event Object (http://arshaw.com/fullcalendar/docs/event_data/Event_Object/)
        // it doesn't need to have a start or end
        var eventObject = {
            title: $.trim($(this).text()), // use the element's text as the event title
            userId: this.id
        };
        // store the Event Object in the DOM element so we can get to it later
        $(this).data('eventObject', eventObject);
        // make the event draggable using jQuery UI
        $(this).draggable({
            zIndex: 999,
            revert: true, // will cause the event to go back to its
            revertDuration: 0  //  original position after the drag
        });
    });
    /* initialize the calendar-----------------------------------------------------------------*/   
    $('#calendar').fullCalendar({
        header: {
            left: 'prev,next today',
            center: 'title',
            right: 'agendaWeek,agendaDay'
        },
        defaultView: 'agendaWeek',
        editable: true,
        events: [
            <?php foreach ($users as $user) { foreach ($user['Event'] as $event): ?>
            {
                start: '<?php echo $event['start_date']; ?>',
                end: '<?php echo $event['end_date']; ?>',
                title: '<?php echo $event['title']; ?>',
                allDay: false,
                color: '#077169'
            },
            <?php endforeach; } ?>
        ],
        droppable: true, // this allows things to be dropped onto the calendar !!!
        drop: function(date, allDay) { // this function is called when something is dropped
            // retrieve the dropped element's stored Event Object
            var originalEventObject = $(this).data('eventObject');
            // we need to copy it, so that multiple events don't have a reference to the same object
            var copiedEventObject = $.extend({}, originalEventObject);
            // assign it the date that was reported
            copiedEventObject.start = date;
            copiedEventObject.end = (date.getTime() + 3600000) / 1000; // default shift length is 1 hour
            copiedEventObject.userId = originalEventObject.userId;
            copiedEventObject.allDay = false;
            // render the event on the calendar
            // the last `true` argument determines if the event "sticks" (http://arshaw.com/fullcalendar/docs/event_rendering/renderEvent/)
            $('#calendar').fullCalendar('renderEvent', copiedEventObject, true);
            // Push events into array
            arrayOfEvents.push(copiedEventObject); 
            console.log(arrayOfEvents);
        }
    });
});  // End document ready
var arrayOfEvents = [];
var data = {};

function updateSchedule() { // Function clicked on in link to send arrayOfEvents to controller to add to database
    // You can get all events out of the array here
    for (var i = 0; i < arrayOfEvents.length; i++) {
        var event = arrayOfEvents[i];
        data += "Event" + i
                + "&user_id=" + event.userId
                + "&start_date=" + event.start
                + "&end_date=" + event.end
                + "&title=" + event.title;
    }
    // Make your ajax post here
    $.ajax({
        type: "POST",
        url: "<?php echo $this->webroot; ?>events/add",
        data: data,
        success: function(response) {
            alert('done!');
        },
        fail: function(response) {
            alert("error");
        }
    });
}

The updateSchedule function is tied to an onClick event and is submitting to the view, but not in the correct format. I need the array to look like this:

Array
(
    [Event] => Array
    (
        [0] => Array
        (
            [user_id] => 'value'
            [start_date] => 'value'
            [end_date] => 'value'
            [title] => 'value'
        ),
        [1] => Array
        (
            [user_id] => 'value'
            [start_date] => 'value'
            [end_date] => 'value'
            [title] => 'value'
        )
   )
)

Currently it looks like:

array(
    'Event' => 'Event0',
    'user_id' => '4',
    'start_date' => 'Tue Apr 30 2013 11:30:00 GMT-0400 (Eastern Daylight Time)',
    'end_date' => 'Tue Apr 30 2013 12:30:00 GMT-0400 (Eastern Daylight Time)',
    'title' => 'value'
)

I'm a bit lost at how to change this to my desired format.