Does this do what you want:

#+BEGIN_SRC emacs-lisp :wrap json

(json-encode '((type . "text")))

#+END_SRC

#+RESULTS:

#+BEGIN_json

{"type":"text"}

#+END_json

John

-----------------------------------
Professor John Kitchin 
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803

@johnkitchin
http://kitchingroup.cheme.cmu.edu

On Wed, Mar 28, 2018 at 1:42 PM, Ag Ibragimov <agzam.ibragimov@gmail.com> wrote:

Sorry, I don't know the best medium to convey ideas and I'm afraid not
qualified (familiar with org-mode codebase) to submit a PR for this.
I wonder how difficult would be to
add the possibility to have babel src block results to be rendered as
json?
Basically a new result type https://orgmode.org/manual/results.html#results

Thank you.