{
    "ClusterVersions": [
        {
            "ClusterVersion": "1.0", 
            "Description": "release db engine 1.0.54", 
            "ClusterParameterGroupFamily": "redshift-1.0"
        }
    ], 
    "ResponseMetadata": {
        "RequestId": "6641e675-9167-11e2-a970-49138ad38474"
    }
}