DeviceCheck: Authorization Token Issue

Hi everybody,

I am trying to make DeviceCheck work in Javascript. But I keep on getting this issue:

Unable to verify authorization token

Following is my code:

versionRouter.post('/update_two_bits', function(req, response) {
  console.log('hereeee');
  console.log("\n\n\n\n\n");
  var dctoken = req.body.token;
  var bit0 = req.body.bit0;
  var bit1 = req.body.bit1;

  console.log("Updating two bits to:");
  console.log("bit0: "+bit0);
  console.log("bit1: "+bit1);

  
  var jwToken = jwt.sign({}, cert, { algorithm: 'ES256', keyid: keyId, issuer: teamId,});

  
  console.log('jwToken',jwToken);

  // Build the post string from an object
  var post_data = {
      'device_token' : dctoken,
      'transaction_id': uuidv4(),
      'timestamp': Date.now(),
      'bit0': bit0,
      'bit1': bit1
  }
  // An object of options to indicate where to post to
  var post_options = {
      host: deviceCheckHost,
      port: '443',
      path: '/v1/update_two_bits',
      method: 'POST',
      headers: {
          'Authorization': 'Bearer '+jwToken
      }
  };

  // Set up the request
  var post_req = https.request(post_options, function(res) {
      res.setEncoding('utf8');

      console.log(res.headers);
      console.log("statusCode: "+res.statusCode);

      var data = "";
      res.on('data', function (chunk) {
        data += chunk;
      });
      res.on('end', function() {
        console.log(data);
        response.send({"status": res.statusCode});
      });

      res.on('error', function(data) {
        console.log('error');
        console.log(data);
        response.send({"status": res.statusCode});
      });
  });

  // post the data
  post_req.write(new Buffer.from(JSON.stringify(post_data)));
  post_req.end();
});

Kindly provide some solution for it.