[Bug]: FedEx Registration Adress Validation not working

[TGKN]

Software Version

7.7.1

Language Version

4.8.1

Operating System

Windows 11

What happened?

1.Implement new FedEx Registration flow according to https://support.easypost.com/hc/en-us/articles/35262738410253-FedEx-Multi-Factor-Authentication
2.When calling the address valiation api https://api.easypost.com/v2/fedex_registrations/FEDEX_ACCOUNT_NUMBER/address an error is returned indicating that postal code and country code need to be passed. However these have been specified

Reason why this is happening:
Expected parameter structure (as per spec.):
"address_validation": {
"name": "Account Name",
"street1": "1234 My Address",
"city": "MyCity",
"state": "ST",
"postal_code": "12345",
"country_code": "US"
},
"easypost_details": {
"action": "update",
"type": "FedexAccount",
"carrier_account_id": "ca_123456778"
}

Current structure generated by easypost c# nuget:
{
"address_validation": {
"name": "somename",
"street1": "some address",
"city": "some city",
"state": "NY",
"zip": "12345",
"country": "US"
},
"easypost_details": {
"action": "create",
"type": "FedexAccount"
}
}

As you can see the parameters "zip" and "country" need to be renamed to "postal_code" and "country_code" otherwise the address validation will never work.
...

What was expected?

Address valiation to work properly.

Sample Code

Relevant logs