This illustration shows the response Body tab of the Postman application. 
The Body tab shows the response from the first back-end service in JSON format:
[
  {
    "account_number": "4859634",
    "name": "Darko",
    "gas_usage": "20,006 Btu",
    "gas_cost": "¥ 46,896",
    "electricity_usage": "3,430 kW",
    "electricity_cost": "¥ 12,932",
    "environment": "Japan 1"
  }
]