How to consume 1 localhost log

[FranciscoImanolSuarez]

Sorry for the inconvenience, I wanted to ask how I can bring 1 record only in the path localhost: 8081 / queryCalls that is, to be able to show in json the first record only

On the server in app.js is this GET route but I do not get an idea in chrome or postman how to consume only the first record
app.get ('/ queryAllCars', (req, res) => {
  network.queryAllCars ()
    .then ((response) => {
        var carsRecord = JSON.parse (response);
        res.send (carsRecord)
      });
})

[sandhya-nayak]

@FranciscoImanolSuarez A new GET route has been added to get a single record from the JSON:

E.g. http://localhost:8081/querySingleCar?key=CAR1 will show the JSON record corresponding to CAR with key "CAR1"