PUT http://localhost:8636/api/gateway/v1/security/user
{
  "Id": "cb54e5fc-9fde-49df-9800-fb1e6d0e49ba",
  "userName": "EKovaljovCSR",
  "roles":["dcbb2b20-18d9-4f76-8d3e-1b5445dd24dc" ///RESULT ROLE ID],
  "CreatedUtc": "2017-08-16T08:06:23.332Z"
}