API does not return right data in Google Apps Script-CodePudding

I'm trying to fetch Wise API to save the exchange rate to Google Sheets, but for some reason the data returned is not correct.

It works in Postman but when I make same request in Google Sheets via Google Apps Script data just don't match.

curl example from documentation

  https://api.transferwise.com/v3/quotes/ \
  -H "Authorization: Bearer <your client credentials token>"
  -H 'Content-type: application/json' \
  -d '{
    "sourceCurrency": "GBP",
    "targetCurrency": "USD",
    "sourceAmount": null,
    "targetAmount": 110 }'

Response in Postman:

Request in Google Apps Script:

const url = "https://api.transferwise.com/v3/quotes/";
    const response = UrlFetchApp.fetch(url, {
        "method": "POST",
        "headers": {
            "Authorization": "Bearer   mytoken",
            "Content-Type": "application/json"
        },
        "muteHttpExceptions": true,
        "followRedirects": true,
        "validateHttpsCertificates": true,
        "contentType": "application/json",
        "payload": JSON.stringify({"\\\"sourceCurrency\\\"":"\\\"EUR\\\"","\\\"targetCurrency\\\"":"\\\"USD\\\"","\\\"sourceAmount\\\"":"null","\\\"targetAmount\\\"":"1000"})
    });

  const data = JSON.parse(response.getContentText())

    Logger.log("Response code is %s", response.getResponseCode());
    Logger.log(data.rate);
}

Response on console:

API is returning "1.0176" instead of "0.98015" and I can't discovery what I'm doing wrong.

CodePudding user response：

Change your payload to:

 "payload": `{
  "sourceCurrency": "EUR",
  "targetCurrency": "USD",
  "souceAmount": 1000,
  "targetAmount": null 
 }`