find - users - userId

{
    "executionSuccess" : true,
    "nReturned" : 100,
    "executionTimeMillis" : 141,
    "totalKeysExamined" : 100,
    "totalDocsExamined" : 100,
    "executionStages" : {
        "stage" : "FETCH",
        "nReturned" : 100,
        "executionTimeMillisEstimate" : 140,
        "works" : 101,
        "advanced" : 100,
        "needTime" : 0,
        "needYield" : 0,
        "saveState" : 6,
        "restoreState" : 6,
        "isEOF" : 1,
        "invalidates" : 0,
        "docsExamined" : 100,
        "alreadyHasObj" : 0,
        "inputStage" : {
            "stage" : "IXSCAN",
            "nReturned" : 100,
            "executionTimeMillisEstimate" : 10,
            "works" : 101,
            "advanced" : 100,
            "needTime" : 0,
            "needYield" : 0,
            "saveState" : 6,
            "restoreState" : 6,
            "isEOF" : 1,
            "invalidates" : 0,
            "keyPattern" : {
                "users" : 1
            },
            "indexName" : "users_1",
            "isMultiKey" : true,
            "isUnique" : false,
            "isSparse" : false,
            "isPartial" : false,
            "indexVersion" : 1,
            "direction" : "forward",
            "indexBounds" : {
                "users" : [
                    "[\"9163099\", \"9163099\"]"
                ]
            },
            "keysExamined" : 100,
            "dupsTested" : 100,
            "dupsDropped" : 0,
            "seenInvalidated" : 0
        }
    }
}