var myHeaders = new Headers();
myHeaders.append('Authorization', 'Bearer <short-access-token>');
myHeaders.append('Content-Type', 'application/json');

var requestOptions = {
  method: 'GET',
  headers: myHeaders,
  redirect: 'follow'
};

fetch('https://api.sunbreak.io/audiences/v1/245ce633-796f-4dfa-ae6f-4b2762adbf45', requestOptions)
  .then(response => response.json())
  .then(result => console.log(result))
  .catch(error => console.error(error));

var request = require('request');
var options = {
  'method': 'GET',
  'url': 'https://api.sunbreak.io/audiences/v1/245ce633-796f-4dfa-ae6f-4b2762adbf45',
  'headers': {
    'Authorization': 'Bearer <short-access-token>',
    'Content-Type': 'application/json'
  }
};
request(options, function (error, response) {
  if (error) throw new Error(error);
  console.log(response.body);
});

<?php
require_once 'HTTP/Request2.php';
$request = new HTTP_Request2();
$request->setUrl('https://api.sunbreak.io/audiences/v1/245ce633-796f-4dfa-ae6f-4b2762adbf45');
$request->setMethod(HTTP_Request2::METHOD_GET);
$request->setConfig(array(
  'follow_redirects' => TRUE
));
$request->setHeader(array(
  'Authorization' => 'Bearer <short-access-token>',
  'Content-Type' => 'application/json'
));
try {
  $response = $request->send();
  if ($response->getStatus() == 200) {
    echo $response->getBody();
  }
  else {
    echo 'Unexpected HTTP status: ' . $response->getStatus() . ' ' .
    $response->getReasonPhrase();
  }
}
catch(HTTP_Request2_Exception $e) {
  echo 'Error: ' . $e->getMessage();
}