{
  "data": {
    "fileUrl": "http://localhost:3000/storage/cm1ubebtj000614kqe4hs3c67/public/profile--fid--abc123.png",
    "presignedFields": {
      "Policy": "base64EncodedPolicy",
      "X-Amz-Algorithm": "AWS4-HMAC-SHA256",
      "X-Amz-Credential": "your-credential",
      "X-Amz-Date": "20250312T000000Z",
      "X-Amz-Signature": "your-signature",
      "key": "uploads/public/profile--fid--abc123.png"
    },
    "signedUrl": "https://s3.example.com/your-bucket",
    "updatedFileName": "profile--fid--abc123.png"
  }
}