I am trying to send a file through Postman using the form-data type. The request is sent to AWS Lambda using an API. The request content in the Lambda is corrupted with a lot of question marks in the content.

I would like to convert back to the file from the request content and store the file in S3.

Existing code -

const res = multipart.parse(event, false);
var file = res['File'];
var encodedFile = Buffer.from(file["content"], 'binary');
var encodedFilebs64 = Buffer.from(file["content"], 'binary').toString('base64');
const s3 = new AWS.S3();

const params = {
    Bucket: config.s3Bucket,
    Key: "asset_" + known_asset_id + '.bin',
    Body: encodedFile
};

await s3.upload(params).promise().then(function(data) {
    console.log(`File uploaded successfully. ${data.Location}`);
}, function(err) {
    console.error("Upload failed", err);
});

Response content from Cloudwatch logs - https://i.stack.imgur.com/SvBfF.png

When converting this to binary and comparing, the file is not same as the original file.

It would be helpful if someone could help me construct the file from response and store it in S3.