curl --request GET \
  --url https://{instance}.omniapp.co/api/scim/v2/groups/{userGroupId} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "displayName": "<string>",
  "members": [
    {
      "value": "<string>",
      "display": "<string>"
    }
  ],
  "meta": {
    "resourceType": "Group",
    "created": "2023-11-07T05:31:56Z",
    "lastModified": "2023-11-07T05:31:56Z"
  }
}