Retrieve Details of the Current Workgroup
Retrieve details of the current workgroup using the GET command. Your <instance> is based on your region. See Regional Instances to find the instance for your region.
GET https://< domain-name >.< instance >/kns/api/v1/workgroups
Parameters do not exist for this command.

Use the following cURL.
curl -X GET "https://ilmn-demo.trusight.illumina.com/kns/api/v1/session/workgroups"
-H "accept: */*"