Access blood pressure data from Google fit rest API

I am using the Google Fit REST API to retrieve blood pressure data from the user's Google Fit account. I am able to successfully make a request to the API endpoint https://www.googleapis.com/fitness/v1/users/me/dataset:aggregate and receive a response. However, I am having difficulty understanding how to extract the blood pressure values from the response and differentiate between systolic and diastolic readings.

{
  "bucket": [
    {
      "startTimeMillis": "1686076220000",
      "endTimeMillis": "1686137004070",
      "dataset": [
        {
          "dataSourceId": "derived:com.google.blood_pressure.summary:com.google.android.gms:aggregated",
          "point": [
            {
              "startTimeNanos": "1686130860000000000",
              "originDataSourceId": "raw:com.google.blood_pressure:com.google.android.apps.fitness:user_input",
              "endTimeNanos": "1686132720000000000",
              "value": [
                {
                  "mapVal": [],
                  "fpVal": 120.5
                },
                {
                  "mapVal": [],
                  "fpVal": 121
                },
                {
                  "mapVal": [],
                  "fpVal": 120
                },
                {
                  "mapVal": [],
                  "fpVal": 84.5
                },
                {
                  "mapVal": [],
                  "fpVal": 89
                },
                {
                  "mapVal": [],
                  "fpVal": 80
                },
                {
                  "mapVal": []
                },
                {
                  "mapVal": []
                }
              ],
              "dataTypeName": "com.google.blood_pressure.summary"
            }
          ]
        }
      ]
    }
  ]
}

I would like to extract the systolic and diastolic blood pressure values from the response, where the systolic value is higher and the diastolic value is lower. In the provided example, my Google Fit app shows two entries with values 120/80 and 121/89.

How can I correctly parse the response data to fetch the appropriate systolic and diastolic values?

Any guidance or code examples would be greatly appreciated. Thank you!