This call returns created session:
{
"id": "4aecdc2178b9430cbbb8db44fb7ac384",
"environment_id": "4dc8a2e8986fa8fa5bf24dc8a2e8986fa8",
"created": "2010-11-30T03:23:42Z",
"updated": "2010-11-30T03:23:54Z",
"user_id": "d7b501094caf4daab08469663a9e1a2b",
"version": 12,
"state": "open"
}
