How to pass a token which my api uses as header in appscript?

Question

So i am getting trouble in passing the token which my api uses as header, I tried in postman api works fine, Its an internal api.

Whereas when it come to code which is present in appscript it works fine with open apis but when I try to use my own internal api it throws error as :

Exception: Request failed for https://api.rupeek.com returned code 401. Truncated server response: {"message":"Bad authentication"}

sharing the appscript code below : tag-name

 function onOpen() {
  var ui = SpreadsheetApp.getUi();
  ui.createMenu('Custom Rupeek Menu')
      .addItem('Get Ref ID','displayrefid')
      .addToUi();
}
 

// function to call Rupeek API
function callrpkAPI(rpk) {
  
  // Call the Rupeek api

  var url = 'api url';
  var response = UrlFetchApp.fetch(url, token);
  var token = {
    "method": "get",
    "headers": {
      "Authorization": "MY JWT token passing here ",
      "Accept": "application/json",
    },
    "contentType": "application/json",
    "body": "phone",
};

  
  // Parse the JSON reply
  var json = response.getContentText();
  return JSON.parse(json);
  
}
 
 
function displayrefid() {
  
  // pick up the search term from the Google Sheet
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var sheet = ss.getActiveSheet();
  
  var ref = sheet.getRange(4,2).getValue();
  
  var id = callrpkAPI(ref);
  
  var results = id["results"];
  
  var output = []
  // clear any previous content
  sheet.getRange(15,1).clearContent();
  
  // paste in the values
  sheet.getRange(15,1).setValues(sortedOutput);
  
}

Please let me know if you guys get the solution for this stuck in this for last 2 days.

So i am getting trouble in passing the token which my api uses as header, I tried in postman api works fine, Its an internal api.

Whereas when it come to code which is present in appscript it works fine with open apis but when I try to use my own internal api it throws error as :

Exception: Request failed for https://api.rupeek.com returned code 401. Truncated server response: {"message":"Bad authentication"}