POST request to the /api/esim/order/instant endpoint.- Please make sure you have timeout set to at least `60 seconds` to use this endpoint.(Depends on what you order, the fulfillment time can varies)
- There is no need to call /apply endpoint with this endpointitems: An array of eSIM items you want to order. Each item should contain the following details:packageId: The ID of the eSIM package you want to order. This is a required field of type string.quantity: The quantity of the eSIM package you want to order. This is a required field of type number.referenceId: The reference ID for the order. This is an optional field of type string. (Your custom reference ID for the order, if needed.)