shell> curl --dump - http://localhost:8529/_api/document/products/2222282140

HTTP/1.1 200 OK
content-type: application/json; charset=utf-8
etag: "2222282140"

{ 
  "hello" : "world", 
  "_id" : "products/2222282140", 
  "_rev" : "2222282140", 
  "_key" : "2222282140" 
}