How to change laravel logs format?

I need change the format of laravel logs to json format like this:

{
   "time":"2015-10-06 15:45:36",
   "host":"192.000.000",
   "protocol”:”http, tcp",
   "remote-addrress": "192.000.001",
   "user":"user-logged",
   "level": "warning",
   "message":"short message for identification",
   "payload": "trace plus any extra information"
}  

How to do this?

via Chebli Mohamed