google merchant rating feed

how do i feed the 1500 ratings that we have collected through your plugin to google merchant. here is the response we got from google

Thank you for noting that you would be interested in sending product ratings to Google for “Arishtam Home Brew Supply Store”.

Your aggregator, cusrev.com, isn’t part of the Product Ratings program yet, so they won’t be able to submit a direct feed for you. Instead, you’ll need to send a direct product ratings feed to Google Merchant Center.

Please let us know if you would like to send a direct Product Ratings feed by replying to this email.

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