Deserialization to class not working

[rpresser]

I am trying to capture the Digicert Automation API with a Refit
HttpClient Factory.

When I define the method to return string, so I can see the raw JSON returned, it appears correct
Task<string> GetAgentList([Body] GetAgentListReq req);
Returns JSON string that starts off like this:

{"error":null,"data":{"agentList":[{"agentId":2545.0,"accountId":"1349264","divisionId":"91804","hostname":"MTLWPVINSIWEB12","agentName":"10.220.100.37","status":"Configured","sensorLicenseKey":"39F3356652833A47","sensorName":"mtlwdvinsidemo_20200921","hostIp":"10.220.100.37","type":"Agent","agentLicense":"83C7BF7AED8F7358","updatePreference":0.0,"updateAvailable":false,"tag":"","osName":"Windows"},

But when I change it to Task<AgentList>, the result deserializes without error but the data value is null. My interface file and my console client app are attached.
IDigicert.Automation.API.cs.zip
Program.zip