[Python] Can we upload an image to S3 using a presigned URL generated via AWS AppSync?

I have set up an AWS architecture where:

1. 
   AWS Lambda generates a presigned URL for an S3 bucket.
   
   
2. 
   The Lambda function is connected to AWS AppSync, which returns the presigned URL to the client.
   
   
3. 
   I can successfully download files using the generated presigned URL.
   

Now, my question is:

• 
  Can I use the generated presigned URL to upload an image (or any file) directly to S3?
  
  
• 
  If yes, how can I upload the file using the presigned URL in the APPSYNC is that possible to upload through APPSYNC
  

I want to confirm if the presigned URL allows both download and upload operations when generated via AppSync.

Any guidance or examples would be greatly appreciated!

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