Post method via Airtable API using a Google Script - api

Question

I have the following code in a Google Script:
var data = {
"records": [
{
"fields": {
"Contract Address": "test",
"0x8df3aad3a84da6b69a4da8aec3ea40d9091b2ac4": "1234"
}
}
]
};
var options = {
"method" : "post",
'Content-Type': 'application/json',
'muteHttpExceptions' : true,
// "payload" : data,
"payload" : JSON.stringify(data)
};
function tryAPost(){
var url = "https://api.airtable.com/v0/xxxxxxxxxxxxx/Balance%20Tracking?api_key=keyxxxxxxxxxx";
var response = UrlFetchApp.fetch(url, options);
//console.log(response.getContentText());
console.log(response.getResponseCode());
};
I get the following response:
422
And the data does not end up in Airtable.
The payload works in the body of a post request in Postman.
What am I doing wrong?
EDIT Per Comment:
here's the exmaple code from airtable:
var Airtable = require('airtable');
var base = new Airtable({apiKey: 'YOUR_API_KEY'}).base('xxxxxxxxxxxx');
base('Balance Tracking').create([
{
"fields": {
"Contract Address": "Thu, 03 Feb 2022 15:12:37 GMT",
"0xfecf784f48125ccb7d8855cdda7c5ed6b5024cb3": 12055358359168
Adding postman screenshot per comment:

Answer 1

I asked in the Airtable Forum and someone came up with a solution that worked.
Here's the link.
Here's the answer:
//
// post to Airtable (universal)
//
function atPostTable_(baseKey, tableName, payload)
{
var options =
{
method: 'POST',
headers: {
'Authorization' : 'Bearer ' + cMyAirtableAPIKey,
'Content-Type' : 'application/json'
},
payload : JSON.stringify(payload),
muteHttpExceptions : true,
followRedirects: true
};
var response = UrlFetchApp.fetch(cAirtableAPIEndpoint + baseKey + "/" + encodeURIComponent(tableName), options).getContentText();
return(response);
}