unix> curl --dump - http://localhost:8529/_api/document/products/24265127

HTTP/1.1 200 OK
content-type: application/json; charset=utf-8
etag: "24265127"

{ 
  "hallo" : "world", 
  "_id" : "products/24265127", 
  "_rev" : "24265127", 
  "_key" : "24265127" 
}