curl --request GET \
  --url https://api.opal.dev/v1/message-channels \
  --header 'Authorization: Bearer <token>'

{
  "channels": [
    {
      "message_channel_id": "7870617d-e72a-47f5-a84c-693817ab4567",
      "third_party_provider": "SLACK",
      "remote_id": "C03FJR97276",
      "name": "api-team-audit-channel",
      "is_private": false
    },
    {
      "message_channel_id": "1520617d-e72a-47f5-a84c-693817ab48ad2",
      "third_party_provider": "SLACK",
      "remote_id": "A4FJR97365D",
      "name": "api-team-monitor-channel",
      "is_private": false
    }
  ]
}