I want to create a google contact from airtable scripting - scripting

Question

Airtable scripting has some limitations, and I dont know if i can import aditional libraries. I wanted to create a contact through an automation within the platform (when X happens, execute this script). But google using OAuth is difficult to have a simple API call.
What i've done following different guides and questions answered here is:
let inputConfig = input.config();
var data = {
"names": [
{
"givenName": `${inputConfig.name}`,
"familyName": "AirtableAutomation"
}
],
"phoneNumbers": [
{
"value": `${inputConfig.phone}`,
"type": "mobile"
}
]
}
*Code in airtable to import the data i want to use in the created contact
I manually access this url: https://accounts.google.com/o/oauth2/auth?client_id=[clientID]&redirect_uri=[a url of a web page added in my OAuth 2.0 web
ID client]&scope=https://www.googleapis.com/auth/contacts&response_type=code
And copy de code in the redirected url parameter
const data2 = "[code retrieved in url]&client_id=[client id]&client_secret=[client secret]&redirect_uri=[url ]&grant_type=authorization_code";
let response3 = await fetch('https://oauth2.googleapis.com/token', {
method: 'POST',
body: JSON.stringify(data2),
});
With this I expected to obtain the code to finally do the api call to create my contact
let response = await fetch('https://people.googleapis.com/v1/people:createContact?key=[api key]', {
method: 'POST',
body: JSON.stringify(data),
headers: {
'Authorization' : `Bearer ${response3}`,
'Accept' : 'application/json',
'Content-Type': 'application/json'
},
});
But I get a Bad Request error to the https://oauth2.googleapis.com/token API request.
Im looking for a correction of this code or an alternative to create a google contact through airtable scripting. Thanks in advance!