The endpoint returns an array containing the max concurrent users for each minute of live engagement.
Return example:
{
    "attendance": [
        {
            "time": "00:00:00",
            "count": 0
        },
        {
            "time": "00:01:00",
            "count": 4
        },
        {
            "time": "00:02:00",
            "count": 5
        },
        {
            "time": "00:03:00",
            "count": 5
        },
        {
            "time": "00:04:00",
            "count": 6
        },
        {
            "time": "00:05:00",
            "count": 6
        },
        {
            "time": "00:06:00",
            "count": 5
        },
        {
            "time": "00:07:00",
            "count": 7
        },
        {
            "time": "00:08:00",
            "count": 8
        },
        {
            "time": "00:09:00",
            "count": 8
        },
        {
            "time": "00:10:00",
            "count": 9
        },
        {
            "time": "00:11:00",
            "count": 9
        },
        {
            "time": "00:12:00",
            "count": 8
        },
        {
            "time": "00:13:00",
            "count": 8
        },
        {
            "time": "00:14:00",
            "count": 9
        },
        {
            "time": "00:15:00",
            "count": 8
        },
        {
            "time": "00:16:00",
            "count": 9
        },
        {
            "time": "00:17:00",
            "count": 8
        },
        {
            "time": "00:18:00",
            "count": 8
        },
        {
            "time": "00:19:00",
            "count": 8
        },
        {
            "time": "00:20:00",
            "count": 8
        },
        {
            "time": "00:21:00",
            "count": 8
        },
        {
            "time": "00:22:00",
            "count": 7
        },
        {
            "time": "00:23:00",
            "count": 6
        },
        {
            "time": "00:24:00",
            "count": 0
        },
        {
            "time": "00:25:00",
            "count": 0
        },
        {
            "time": "00:26:00",
            "count": 0
        }
    ]
}