curl --request GET \
  --url https://platform.unstructuredapp.io/api/v1/workflows/{workflow_id}/notifications/channels

{
  "items": [
    {
      "id": "<string>",
      "event_types": [
        "<string>"
      ],
      "enabled": true,
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "url": "<string>",
      "channel_type": "webhook",
      "description": "<string>"
    }
  ]
}