Encodes the data contained in the :clova_response assign to JSON, sets it as the response body, and sets the content-type header. The response status is also set to 200 if it has not already been set. This means your endpoint can simply call Plug.Conn.send_resp/1 with the conn argument.

plug Plug.Parsers,
  parsers: [:json],
  json_decoder: Poison,
  body_reader: Clova.CachingBodyReader.spec()
plug Clova.ValidatorPlug, app_id: "com.example.my_extension"
plug Clova.DispatcherPlug, dispatch_to: MyExtension
plug Clova.EncoderPlug, json_encoder: Poison

plug :match
plug :dispatch

post "/endpoint" do
  send_resp(conn)
end