Ability to support JSON objects in content.

[davidPalechor]

It would be handy if it could support json-like strings and json objects as well on the server side.

like

{
    "status": 200,
    "content": {"data":"something"},
    "content_type": "application/json",
    "charset": "UTF-8",
    "secret": "randomSecret",
    "expiration": "never"
}