Hipchat notification to 1-1 private chat



I am using hipchat for notifying the montioring events to rooms. Here is the link https://sensuapp.org/docs/0.29/enterprise/integrations/hipchat.html

i would like to notify the events to users private room instead of group room. i have the API token for the users and to configure it in JSON, i am looking for correct attributes to define. Could you please let me know, if some have any idea. thank you.