client.meeting.update returning "Request body should be a valid JSON object"

[pinkmanJ]

Here is what my method looks like that is calling client.meeting.update()

def update_meeting_topic(booking):
    client = get_zoom_client()

    if not booking.zoom_meeting_id:
        logger.error(f'Unable to get meeting for booking id = {booking.id} -- zoom meeting ID not set?')
        return

    # NOTE: This method is set up exactly the same as Zoomus .create and .get but I am getting this error
    # 'Request Body should be a valid JSON object'
    # everything looks exactly the same. I can't figure out why it's not liking the request.body?

    resp = client.meeting.update(
        id=booking.zoom_meeting_id,
        topic=booking.event_title, # this is a string
    )

    if resp.status_code != 204:
        logger.error(f'Unable to update meeting. Status code -> {resp.status_code}')
        return

Here is the response I am getting back along with what the request looks like. The request body appears to be valid JSON to me?