curl --request PUT \
  --url https://sandbox.api.riqra.com/products/variants/{variantId}/price-lists/{priceListId}/price \
  --header 'Content-Type: application/json' \
  --header 'api-key: <api-key>' \
  --data '
{
  "price": 123,
  "oldPrice": 123,
  "ribbonLabel": "<string>",
  "isTaxExempt": false
}
'

{
  "errors": [
    {
      "message": "<string>",
      "code": 123
    }
  ]
}