Mws-simple signature problem

packages
1

let mws = require(‘mws-simple’)({
accessKeyId: ourAmazonController.awsAccessKeyId,
secretAccessKey: ourAmazonController.secret,
merchantId: ourAmazonController.sellerId
});

var ourFeedContent = `
                  <?xml version="1.0" ?>
                    <AmazonEnvelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="amzn-envelope.xsd">
                      <Header>
                        <DocumentVersion>1.01</DocumentVersion>
                        <MerchantIdentifier>M_SELLER_354577</MerchantIdentifier>
                      </Header>
                      <MessageType>Product</MessageType>
                      <PurgeAndReplace>true</PurgeAndReplace>
                      <Message>
                        <MessageID>1</MessageID>
                        <OperationType>Update</OperationType>
                        <Product>
                          <SKU>JDLtestJDL</SKU>
                          <ProductTaxCode>A_GEN_TAX</ProductTaxCode>
                          <LaunchDate>2025-07-26T00:00:01</LaunchDate>
                          <DescriptionData>
                            <Title>Lyric 500 tc Queen Flat Sheet, Ivory</Title>
                            <Brand>Test Brand</Brand>
                            <Description>
                              This is a test product and is not for purchase.
                            </Description>
                            <BulletPoint>test bullet 1</BulletPoint>
                            <BulletPoint>test bullet 2</BulletPoint>
                            <Manufacturer>test manufacturer</Manufacturer>
                            <SearchTerms>test search term</SearchTerms>
                            <ItemType>test item type</ItemType>
                            <IsGiftWrapAvailable>false</IsGiftWrapAvailable>
                            <IsGiftMessageAvailable>false</IsGiftMessageAvailable>
                          </DescriptionData>
                          <ProductData>
                            <Home>
                              <Parentage>variation-parent</Parentage>
                              <VariationData>
                                <VariationTheme>Size-Color</VariationTheme>
                              </VariationData>
                              <Material>cotton</Material>
                              <ThreadCount>500</ThreadCount>
                            </Home>
                          </ProductData>
                      </Product>
                    </Message>
                    <Message>
                  </AmazonEnvelope>
                  `
;

let submitFeed = {
  feedContent: ourFeedContent,
  query: {
    Action: 'SubmitFeed',
    FeedType: '_POST_PRODUCT_DATA_',
    'MarketplaceIdList.Id.1': ourAmazonController.marketplaceId,
    Version: '2009-01-01'
  }
};

mws.request(submitFeed, function(e, result) {
});


Future = Npm.require('fibers/future');
var myFuture = new Future();

mws.request(submitFeed, function(error, results) {
  if ( error ) {
    myFuture.return(error);
  } else {
    myFuture.return(results);
  }
  //consoleLogObject("results", results);

});

return myFuture.wait(); // wait for the mws http call to return