Updating Order Custom Meta data fields in C#

[jmaciulewicz]

Looking for an example on how to update custom fields for orders in woocommerce via the rest API using WooCommerce.NET.

Here are the meta data for the order.
{
"id": 2639,
"key": "_my_invoice_balance",
"value": "25.25"
},
{
"id": 2638,
"key": "_my_invoice_path",
"value": "https://jdmconsulting.net"
},

I am looking for the proper call to make to update these two fields.

Thanks