curl -X GET "https://api.cryptomate.me/cards/virtual-cards/card_6f1e2a30-4a3c-4b2e-9a1d-5e8c9b7a1f23/virtual-balances" \
  -H "x-api-key: $CRYPTOMATE_API_KEY"

{
  "available_credit": 5000.00
}

{
  "code": "APP_ERROR",
  "message": "The virtual balances does not apply to this card."
}