Create virtual server

curl -X POST --data @vs_create.json --user userid:api_key
https://api.softlayer.com/rest/v3/SoftLayer_Virtual_Guest.json?objectMask=mask.id

{
    "parameters" : [
        {
            "hostname" : "myhostname",
            "domain" : "my.domain.com",
            "startCpus" : 1,
            "maxMemory" : 1024,
            "datacenter" : {
                "name" : "wdc01"
                },
            "hourlyBillingFlag" : true,
            "localDiskFlag" : true,
            "operatingSystemReferenceCode": "UBUNTU_LATEST"
        }
    ]
}

{"id":7742740}