Contact Center - no API for downloading MMS files via the API

API and Webhooks Contact Center
1

My application is receiving the following webhook events:

contact_center.engagement_customer_sent_file

contact_center.engagement_user_sent_file

The example webhook payload in the docs looks something like:

{
  "event": "contact_center.engagement_customer_sent_file",
  "event_ts": 1627906944384,
  "payload": {
    "account_id": "D8cJuqWVQ623CI4Q8yQK0Q",
    "object": {
      "engagement_id": "u154t5-ASlK83fZb1YWqgw",
      "engagement_direction": "outbound",
      "channel": "messaging",
      "channel_source": "sms",
      "date_time_ms": "2022-02-15T09:27:15.987Z",
      "flow_id": "ZWWC0A840C726C2CE3ACF01041CB8CFD8B9",
      "flow_name": "messaging test flow",
      "cc_queue_id": "xqJE_cgERLyAJHYYL5LLeg",
      "queue_name": "queue_661c6e4b-89fc-4b0d-9978-c7394725462",
      "consumer_number": "1045",
      "user_id": "IGTRVt3gQ2i-WjoUIjeZxw",
      "user_display_name": "jchill",
      "flow_number": "1026",
      "consumer_id": "szCyubr_aQhieHNWYbAGMYg",
      "consumer_display_name": "abc",
      "files": [
        {
          "file_id": "Chh7WtzyTaa-PIvsSpfwmA",
          "file_name": "BEF8E336-DFBC-4A88-B553-06556B6692F6.png",
          "file_size": 1796,
          "file_type": "Image"
        }
      ]
    }
  }
}

As you can see, the files have id and name fields, but no URL with which to download them. It’s bad enough that this file information doesn’t appear within either the engagement logs or the SMS logs, but even the webhook specifically for receiving files has no way to access them. This seems like a pretty significant oversight.

When I manually click around engagement logs in the browser, I can see the files are downloaded from urls of the following format:
https:/file.zoom.us/file/<file_id>?jwt={jwt}
But even if I use the file_id from the webhook above, it rejects the JWT my app receives from https:/zoom.us/oauth/token