curl --request DELETE \
  --url https://api.vantage.sh/v2/virtual_tag_configs/{token} \
  --header 'Authorization: Bearer <token>'

{
  "token": "vtag_1234",
  "created_by_token": "usr_1234",
  "key": "Cost Center",
  "overridable": true,
  "backfill_until": "2025-11-01",
  "values": [
    {
      "filter": "costs.provider = 'aws' AND costs.service = 'Amazon Simple Storage Service'",
      "name": "Informatics",
      "business_metric_token": "bsnss_mtrc_abc123",
      "cost_metric": {
        "filter": "<string>",
        "aggregation": {
          "tag": "<string>"
        }
      },
      "display_name": "<string>",
      "label_transforms": [
        {
          "type": "split",
          "delimiter": "<string>",
          "index": 123,
          "template": "<string>"
        }
      ],
      "percentages": [
        {
          "value": "cost-center-a",
          "pct": 50
        }
      ],
      "date_ranges": [
        {
          "start_date": "<string>",
          "end_date": "<string>"
        }
      ]
    }
  ],
  "collapsed_tag_keys": [
    {
      "key": "team",
      "providers": [
        ""
      ],
      "filter": "(costs.provider = 'aws') OR (costs.provider = 'gcp')"
    }
  ]
}