pullJSON.js

function pullJSON() {
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var sheets = ss.getSheets();
  var sheet = ss.getActiveSheet();


  var url="http://example.com/feeds?type=json"; // Paste your JSON URL here
  
   var response = UrlFetchApp.fetch(url); // get feed
  var dataAll = JSON.parse(response.getContentText()); //
  var dataSet = dataAll;
  
  
  var rows = [],
      data;
  

  for (i = 0; i < dataSet.length; i++) {
    data = dataSet[i];
    rows.push([data.id, data.name,data.email]); //your JSON entities here
  }

  dataRange = sheet.getRange(1, 1, rows.length, 3); // 3 Denotes total number of entites
  dataRange.setValues(rows);

}