Please how can I convert this curl request to it's axios equivalent?

curl -X POST https://api.pinterest.com/v5/oauth/token --header "Authorization: Basic {base64 encoded string made of client_id:client_secret}" --header 'Content-Type: application/x-www-form-urlencoded' --data-urlencode 'grant_type=authorization_code' --data-urlencode 'code={YOUR_CODE}' --data-urlencode 'redirect_uri=http://localhost/'

I have spent several hours on this only for me to keep getting

 {"code":1,"message":"Invalid request body"}

Here is what I tried:

const redirectUrl = process.env.PINTEREST_OAUTH_CALLBACK_URL;
const clientId = process.env.PINTEREST_APP_ID;
const clientSecret = process.env.PINTEREST_APP_SECRET;
let url = 'https://api.pinterest.com/v5/oauth/token';

let accessTokenRequestBody = {
    code: code,
    grant_type: "authorization_code",
    redirect_uri: redirectUrl
};

const clientIdAndSecretBase64 = Buffer.from(`${clientId}:${clientSecret}`).toString('base64');
axios(url, {
    method: 'post',
    url: url,
    data: accessTokenRequestBody,
    headers: {
        "Content-Type": 'application/application/x-www-form-urlencoded; charset=UTF-8',
        "Authorization": `Basic ${clientIdAndSecretBase64}`
    }
}).then((response) => {
    let responseData = response.data;
    let accessToken = module.exports.encodePayloadIntoJWT(responseData);
    console.log(`Pinterest ResponseData = ${JSON.stringify(responseData, null, 2)}`);
}).catch((e) => {
    console.log(`${JSON.stringify(e.response.data)}`);
});

I would be really grateful to any help as this has wasted my time so much. I'm currently running behind deadline... Thank you.