{"ParameterGroups": [{"Description": "Default parameter group for redshift-1.0",
                       "ParameterGroupFamily": "redshift-1.0",
                       "ParameterGroupName": "default.redshift-1.0"},
                      {"Description": "description my parameter group",
                       "ParameterGroupFamily": "redshift-1.0",
                       "ParameterGroupName": "parametergroup1"}],
 "ResponseMetadata": {"RequestId": "6d28788b-64f5-11e2-b343-393adc3f0a21"}}