How to retrieve recordings and transcripts after receiving a notification?

[MikeYeager]

I'm using Microsoft.Identity.Web.GraphServiceClient 2.18.1

I was able to successfully create notification subscriptions for recording creation and transcript creation. The notification contains resource property that looks something like this (shortened for brevity):

"resource": "communications/onlineMeetings('MSo5NzZmN ... XhAdGhyZWFkLnYy')/recordings('VjIjIzE5NzZmNG ... JlNzI=')"

and the docs say I can use this to download the recording (or transcript). But it seems this is a portion of a URL. Is there some way to use GraphServiceClient to do the download or do I need to make an HTTPS call using an HTTPClient? The only way I can see to download a recording or transcript with GraphServiceClient is if I have the MeetingId and RecordingId (or TranscriptId), which are not included in the notification.

Thanks in advance, Mike

[MikeYeager]

Let me expand on this a little bit. I'm subscribing to tenant wide notifications when transcripts and recordings are created. The notifications look something like this:

{
    "value": [{
            "tenantId": "24db396b-b795-45c9-bcfa-d3559193f2f7",
            "changeType": "created",
            "subscriptionId": "cea3e742-6ff8-41cf-b01d-93ca384fbe53",
            "resource": "communications/onlineMeetings('MSo1O ... kLnYy')/transcripts('MSM ... 0ZjU5')",
            "clientState": "AD4777EA-A883-4329-A225-9FFCB8811134",
            "resourceData": {
                "id": "MSMjMCMjODNmMjYxMjEtYTNmMi00ZDgzLWJkN2UtZGQzYTQwYmM0ZjU5",
                "@odata.type": "#Microsoft.Graph.callTranscript",
                "@odata.id": "communications/onlineMeetings('MSo1O ... kLnYy')/transcripts('MSM ... 0ZjU5')"
            },
            "subscriptionExpirationDateTime": "2024-05-16T18:45:42.89747-07:00"
        }
    ]
}

Based on this response, is the any way to retrieve the transcript or recording? The only way I can find mentioned in the docs is to have the organizer id, which isn't part of the notification. It does not appear you can download a transcript or recording with only the meeting Id and transcript/recording Id. It seems this notification doesn't have the info necessary.