Fiat amount the user intends to spend (as a decimal string).
Crypto asset the user wants to receive.
Target C-address that will receive the purchased crypto. The provider will route funds to this address on Stellar.
ISO 4217 fiat currency code.
Provider to use for this transaction.
Parameters for generating an on-ramp URL via OffRampIntegration.getOnRampUrl.
An on-ramp URL redirects the user to a provider's checkout page where they pay with a credit card or bank transfer and receive crypto at
cAddress.