To create a top-up order, you need to send a POST request to the /api/esim/order/topup endpoint.You are required to provide the following parameters in the request body:
iccid: The ICCID of the eSIM you want to top-up. This is a required field of type string.
packageId: The ID of the eSIM package you want to top-up. This is a required field of type string.