curl -X GET \
 /tax-groups/{id} \
 --header "Authorization: Bearer <token>"

{
  "id": "00000000-0000-0000-0000-000000000000",
  "internalDescription": "19%",
  "reverseChargeType": "REVERSE_CHARGE",
  "type": "standard",
  "taxes": [
    {
      "id": "00000000-0000-0000-0000-000000000000",
      "description": "19%",
      "code": "19",
      "rate": 19,
      "validFrom": "2021-01-01",
      "countryCode": "DE"
    }
  ]
}