mobile money flutterwave payment
{ "tx_ref":"MC-1585230950508", "amount":"1500", "email":"user@flw.com", "phone_number":"054709929220", "currency":"UGX", "fullname":"John Madakin", "redirect_url":"https://rave-webhook.herokuapp.com/receivepayment", "voucher":128373, "network":"MTN" }