curl --request GET \
  --url https://api.example.com/admin/commission/rules/{id} \
  --header 'Authorization: Bearer <token>'

{
  "commission_rule": {
    "id": "<string>",
    "name": "<string>",
    "type": "flat",
    "reference": "<string>",
    "reference_id": "<string>",
    "is_active": true,
    "include_tax": true,
    "percentage_rate": 123,
    "price_set_id": "<string>",
    "price_set": [
      {
        "amount": 123,
        "currency_code": "<string>"
      }
    ],
    "min_price_set_id": "<string>",
    "min_price_set": [
      {
        "amount": 123,
        "currency_code": "<string>"
      }
    ],
    "max_price_set_id": "<string>",
    "max_price_set": [
      {
        "amount": 123,
        "currency_code": "<string>"
      }
    ],
    "ref_value": "<string>",
    "fee_value": "<string>"
  }
}