new klaviyo node SDK - node.js

Question

I'm trying to use Klaviyo for the first time, and the natural starting point seems to be their new Node SDK. Unfortunately, their documentation seems to be an odd combination of extremely detailed, and laking any details.
I've set up my account and gotten my API key, but am failing to get a simple registration to succeed.
I thought I could do this:
import { ConfigWrapper, Profiles } from 'klaviyo-api';
import logger from '../utils/logger';
import requireEnvVariable from '../utils/requireEnvVariable';
export async function subscribe(profile) {
const apiKey = requireEnvVariable('KLAVIYO_PK');
ConfigWrapper(apiKey);
const user = Profiles.createProfile(profile)
.then(data => logger.debug({data}, 'Got profile data'))
.catch(error => {
logger.warn(error, 'Klaviyo error');
return error;
});
return true;
}
For profile, I'm passing in
{
"email": "me#example.com",
"phone_number": "",
"first_name": "Bob",
"last_name": "Smith"
}
but it responds with an error:
WARN: Klaviyo error
env: "development"
err: {
"type": "Error",
"message": "Bad Request",
"status": 400,
"response": {
"req": {
"method": "POST",
"url": "https://a.klaviyo.com/api/profiles/",
"data": {
"email": "me#example.com",
"phone_number": "",
"first_name": "Bob",
"last_name": "Smith"
},
"headers": {
"authorization": "Klaviyo-API-Key <my private key>",
"revision": "2022-10-17",
"user-agent": "klaviyo-api-node/1.0.2",
"content-type": "application/json",
"accept": "application/json"
}
},
"header": {
"date": "Wed, 28 Dec 2022 23:34:14 GMT",
"content-type": "application/vnd.api+json",
"content-length": "211",
"connection": "close",
"cf-ray": "780e1b056c3728f5-ORD",
"allow": "GET, POST, HEAD, OPTIONS",
"vary": "Cookie, Accept-Encoding",
"cf-cache-status": "DYNAMIC",
"cid": "UDiE82",
"ratelimit-limit": "700, 75;w=1, 700;w=60",
"ratelimit-remaining": "699",
"ratelimit-reset": "44",
"x-robots-tag": "noindex, nofollow",
"server": "cloudflare"
},
"status": 400,
"text": "{\"errors\":[{\"id\":\"5648779b-3e1a-4ccf-80c4-dc19b8b32a2c\",\"status\":400,\"code\":\"invalid\",\"title\":\"Invalid input.\",\"detail\":\"The payload provided in the request is invalid.\",\"source\":{\"pointer\":\"/data\"},\"meta\":{}}]}"
}
}
The various examples under Optional Parameters made me think that the above would Just Work; however, the docs also say, "For example values / data types, as well as whether parameters are required/optional, please reference the corresponding API Reference link," and "This SDK is a thin wrapper around our API. See our API Reference for full documentation on API behavior."
So looking at the Create Profile API Reference, I tried both
const user = Profiles.createProfile({attributes: profile})
and
const user = Profiles.createProfile({type: 'profile', attributes: profile})
but they both end up with the same error (except the reported data is updated appropriately, e.g.,
"status": 400,
"response": {
"req": {
"method": "POST",
"url": "https://a.klaviyo.com/api/profiles/",
"data": {
"type": "profile",
"attributes": {
"email": "me#example.com",
"phone_number": "",
"first_name": "Bob",
"last_name": "Smith"
}
},
What's the right way to use the new SDK? Or should I ignore this, and go back to creating manual fetch calls against their API?