What it is the best way to extract all at once index members?

{
  "ExtractionRequest": {
    "@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.TickHistoryIntradaySummariesExtractionRequest",
    "ContentFieldNames": [ "Close Ask", "Close Bid", "Domain", "High", "High Ask", "High Bid", "History End", "History Start", "Instrument ID", "Instrument ID Type", "Last", "Low", "Low Ask", "Low Bid", "No. Asks", "No. Bids", "No. Trades", "Open", "Open Ask", "Open Bid", "RIC", "Sample Data", "Volume" ],
    "IdentifierList": {
      "@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.InstrumentIdentifierList",
      "InstrumentIdentifiers": [ { "Identifier": "O#.SPX",  "IdentifierType": "Ric" } ],
      "ValidationOptions": null,
      "UseUserPreferencesForValidationOptions": false
    },
    "Condition": {
      "MessageTimeStampIn": "GmtUtc",
      "ApplyLegacySummaryTimeLabel": false,
      "ReportDateRangeType": "Range",
      "QueryStartDate": "2008-10-13T13:00:00.000-05:00",
      "QueryEndDate": "2008-10-13T14:00:00.000-05:00",
      "SummaryInterval": "OneMinute",
      "TimebarPersistence": true,
      "DisplaySourceRIC": true
    }
  }
}