with {:ok, %{status_code: code}} <- @httpoison.post(callback, xml, [
{"Content-Type", "application/atom+xml"},
{"X-Hub-Signature", "sha1=#{signature}"}
with {:ok, %{status_code: code}} <- @httpoison.post(callback, xml, [
{"Content-Type", "application/atom+xml"},
{"X-Hub-Signature", "sha1=#{signature}"}