Get current authenticated user

{
    "success": true,
    "data": {
        "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
        "external_user_id": "24410722-0372-4ab1-bb0b-9795f8826466",
        "organization_id": "7c60d51f-b44e-4682-87d6-449835ea4de6",
        "email": "user@example.com",
        "username": "string",
        "role": "host",
        "is_active": true,
        "created_at": "2019-08-24T14:15:22.123Z"
    },
    "timestamp": 0
}