import json

def send_res(j): # EXAMPLE FUNCTION
    print(j)
send_res(json.dumps({'evt': 'n','m':'__string__'}))

json = require('json');

function send_res(j) -- example function
    print(j);
end
local dict = {};
dict['evt'] = {};
dict['evt']['n'] = {};
dict['evt']['n']['m'] = '__string__';
send(json.encode(dict));