{
   "hideColTrue": true,
   "customers": [
      { 
        "name": "John Smith",
        "age": 23,
        "is_last_bill_paid": true
      },
      { 
        "name": "Alice Martin",
        "age": 18,
        "is_last_bill_paid": false
      },
      { 
        "name": "Mary Moss",
        "age":17,
        "is_last_bill_paid": true
      }
    ]
}