curl --request GET \
  --url https://api-sandbox.orum.io/deliver/transfer-groups \
  --header 'Authorization: Bearer <token>' \
  --header 'Orum-Version: <orum-version>'

{
  "transfer_groups": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "transfer_group_reference_id": "<string>",
      "source": {
        "account_reference_id": "<string>",
        "customer_reference_id": "<string>"
      },
      "destination": {
        "account_reference_id": "<string>",
        "customer_reference_id": "<string>"
      }
    }
  ]
}