curl --request DELETE \
  --url https://api.topsort.com/public/v1/billing-service/vendors/{external-vendor-id}/vendor-billing-contact/{billing-contact-id} \
  --header 'Authorization: Bearer <token>'

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}