How to identify last update time from the option chain response?

Developer API
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1

Hi, I received the option chain data, but i need to check whether its been updated recently or not. Could we add a timestamp to indicate when the data was last refreshed?

{
  "status": "success",
  "data": [
    {
      "expiry": "2024-05-24",
      "strike_price": 69400.0,
      "underlying_key": "BSE_INDEX|SENSEX",
      "underlying_spot_price": 75418.04,
      "call_options": {
        "instrument_key": "BSE_FO|1116647",
        "market_data": {
          "ltp": 0.0,
          "volume": 0,
          "oi": 0.0,
          "close_price": 4846.7,
          "bid_price": 0.0,
          "bid_qty": 0,
          "ask_price": 0.0,
          "ask_qty": 0,
          "prev_oi": 0.0
        },
        "option_greeks": {
          "vega": 0.0,
          "theta": 0.0,
          "gamma": 0.0,
          "delta": 1.0,
          "iv": 0.0
        }
      },
      "put_options": {
        "instrument_key": "BSE_FO|1116505",
        "market_data": {
          "ltp": 0.85,
          "volume": 2920,
          "oi": 1310.0,
          "close_price": 2.25,
          "bid_price": 0.85,
          "bid_qty": 10,
          "ask_price": 1.3,
          "ask_qty": 10,
          "prev_oi": 710.0
        },
        "option_greeks": {
          "vega": 0.0,
          "theta": 0.0,
          "gamma": 0.0,
          "delta": 0.0,
          "iv": 0.0
        }
      }
    }
  ]
}
2

Thank you for your feedback. We will relay this to the appropriate team.