Sheets & Appscripts Hubspot POST Request with Authentication Token Problem - google-apps-script

Question

I've created a GAS app to provide better pipeline reporting from our Hubspot instance. So far the app works and I have successfully created a Sales Pipeline that shows up in Google sheets. I am trying to add a capability that requires a POST method to query Hubspot's CRM V3. I got it to work in Postman but cannot replicate it in GAS.
The error I get is "Authentication credentials not found." The headers print to the log so I assume they are being generated properly. My guess is that my access Token and payload are not being passed properly to the API during the request. Any help on the matter would be much appreciated.
function getConversions() {
// Prepare authentication to Hubspot
var service = getService();
var headers = {headers: {'Authorization': 'Bearer ' + service.getAccessToken()}};
Logger.log(headers);
var raw = JSON.stringify({"filterGroups":[{"filters":[{"propertyName":"hs_analytics_last_visit_timestamp","operator":"GT","value":"1561514165666"}]}],"limit":100,"after":0});
var options = {
'method' : 'post',
headers: headers,
'contentType': 'application/json',
// Convert the JavaScript object to a JSON string.
body : raw,
redirect: 'follow',
"muteHttpExceptions": true
};
var response = UrlFetchApp.fetch('https://api.hubapi.com/crm/v3/objects/contacts/search?', options);
var result = JSON.parse(response.getContentText());
Logger.log(result);
};

Answer 1

How about this modification?
Modification points:
When I checked the official document of Search of HubSpot API, I found the curl sample. When this sample is converted to Google Apps Script, I noticed several modification points in your script.
UrlFetchApp.fetch has no properties of body and redirect.
About followRedirects, the official document says as follows.
If false the fetch doesn't automatically follow HTTP redirects; it returns the original HTTP response. The default is true.
In your URL, https://api.hubapi.com/crm/v3/objects/contacts/search? is used. If you don't use the API key, how about modifying to https://api.hubapi.com/crm/v3/objects/contacts/search?
When above modification is reflected to your script, it becomes as follows.
Modified script:
Please modify as follows.
From:
var options = {
'method' : 'post',
headers: headers,
'contentType': 'application/json',
// Convert the JavaScript object to a JSON string.
body : raw,
redirect: 'follow',
"muteHttpExceptions": true
};
To:
var options = {
method : 'post',
headers: headers,
contentType: 'application/json',
payload : raw,
muteHttpExceptions: true
};
Note:
Above modification is required for your script. But I'm worry about the error of Authentication credentials not found.. In this modification, it supposes that your access token of service.getAccessToken() can be used for this request. When I saw the official document, the API key can be also used. If the access token cannot be used, how about using the API key? It's like below.
https://api.hubapi.com/crm/v3/objects/contacts/search?hapikey=YOUR_HUBSPOT_API_KEY
References:
Search of HubSpot API
fetch(url, params)

Answer 2

function getConversions() {
// Prepare authentication to Hubspot
var service = getService();
var headers = {headers: {'Authorization': 'Bearer ' + service.getAccessToken()}};
var url = 'https://api.hubapi.com/crm/v3/objects/contacts/search'
//Logger.log(headers);
var raw = {"filterGroups":[{"filters":[{"propertyName":"hs_analytics_last_visit_timestamp","operator":"GT","value":"1561514165666"}]}],"limit":100,"after":0};
var options = {
method : 'post',
contentType: "application/json",
// Convert the JavaScript object to a JSON string.
payload : JSON.stringify(raw),
muteHttpExceptions: true
};
var response = UrlFetchApp.fetch('https://api.hubapi.com/crm/v3/objects/contacts/search?hapikey=myapikey',options);
var result = JSON.parse(response.getContentText());
Logger.log(response)
Logger.log(result);
};