AWS Multipart Upload SignatureDoesNotMatch

I am trying to upload a PDF file to AWS S3 using multi part uploads. However, when I send the PUT request for uploading the part, I receive a SignatureDoesNotMatch error.

<Error><Code>SignatureDoesNotMatch</Code><Message>The request signature we calculated does not match the signature you provided. Check your key and signing method.</Message>

My Server Code (Node) is as below:

CREATE MultiPart Upload

const AWS = require('aws-sdk');

AWS.config.region = 'us-east-1';
const s3 = new AWS.S3({ apiVersion: '2006-03-01' });

const s3Params = {
      Bucket: 'bucket-name',
      Key: 'upload-location/filename.pdf',
    }

const createRequest = await s3.createMultipartUpload({
          ...s3Params
          ContentType: 'application/pdf'
        }).promise(); 

GET Signed URL

let getSignedUrlParams = {
      Bucket: 'bucket-name',
      Key: 'upload-location/filename.pdf',
      PartNumber: 1,
      UploadId: 'uploadId',
      Expires: 10 * 60
    }

const signedUrl = await s3.getSignedUrl('uploadPart',getSignedUrlParams);

And the Client code (in JS) is :

const response = await axios.put(signedUrl, chunkedFile, {headers: {'Content-Type':'application-pdf'}});

A few things to note:

1. This code works when I allow all public access to the bucket.However, if all public access is blocked, the code does not work.
2. With all public access blocked, I am still able to upload to the bucket with the same credentials using aws cli.
3. I already have tried re-generating AWS Access Key ID and Secret Access Key and that didnt help.

Not able to figure out what the problem is. Any help would be appreciated.

PS: This is the first question I have posted here. So please forgive me if I havent posted it appropriately. Let me know if more details are required.

What worked for me was the version of the signature. While initializing S3, the signature version should also be mentioned.

const s3 = new AWS.S3({ apiVersion: '2006-03-01', signatureVersion: 'v4' });