curl --request POST \
  --url https://app.cryptoprocessing.com/api/v2/currencies/pairs \
  --header 'Content-Type: application/json' \
  --header 'X-Processing-Key: <api-key>' \
  --header 'X-Processing-Signature: <x-processing-signature>' \
  --data '
{
  "currency_from": "USDC",
  "currency_to": "EUR"
}
'

{
  "data": [
    {
      "currency_from": {
        "currency": "USDC",
        "type": "crypto",
        "min_amount": "5.00000000",
        "min_amount_deposit_with_exchange": "5.00000000"
      },
      "currency_to": {
        "currency": "EUR",
        "type": "fiat"
      },
      "rate_from": "1.14616853",
      "rate_to": "1"
    }
  ]
}