EventNotificationType

Value Triggered when Notes
askSellerQuestion An email to the seller is created on Bonanza  
feedback New feedback has been left for the seller  
fixedPriceTransaction The seller has sold an item on Bonanza Can also use "auctionCheckoutComplete" or "itemSold" interchangeably
itemMarkedShipped Seller has marked an item as shipped  

Notification responses will take the following general form: 

{
    "userId":42,
    "message":{
        "sym":"itemSold"
    },
    "happenedAt":"2015-01-06T21:59:34Z"
}