Where do i put the curl request while building a getstarted button for messenger bot using node js

i'm really a beginner in node js and bot building , do i place the facebook curl request code below :

curl -X POST -H "Content-Type: application/json" -d '{ "setting_type":"call_to_actions", "thread_state":"new_thread", "call_to_actions":[ { "payload":"USER_DEFINED_PAYLOAD" } ] }' "https://graph.facebook.com/v2.6/me/thread_settings?access_token=PAGE_ACCESS_TOKEN"

In my package.json file or my index.js file ?

Any help ? please tell me more about curl request in node js if possible , how it works and so on

via Jean Ouédraogo