Mobile Money Chargepost https://api-v2.honeycoin.app/api/b2b/fiat/deposit/momoInitiates a mobile money charge request for B2B transactions.Notes The API supports transactions in Kenya, Uganda, Ghana, and Zambia. Ensure the phoneNumber includes the country code (e.g., 254 for Kenya). The externalReference must be unique for each transaction. Keep your publicKey secure and do not share it publicly.