I have been trying to build a bot with Facebook Messenger. I want to do the handover protocol but it is not working as expected. First I can't find much documentation online on the PSID. Following this link and looking at the curl command below, I can't seem to find the PSID. Is PSID the user ID associated with a particular page and if so where can I find it manually. I have looked at Business Settings and that the "Facebook Page" and "App" must be tied to the same company before it can work and I have already done so.
curl -X POST -H "Content-Type: application/json" -d '{
"recipient":{"id":"<PSID>"},
"target_app_id":123456789,
"metadata":"String to pass to secondary receiver app"
}' "https://graph.facebook.com/v2.6/me/pass_thread_control?access_token=<PAGE_ACCESS_TOKEN>"
Let's say even if I can do it via curl and I want to automate this with code, my Messenger is integrated with IBM Watson Assistant, and there doesn't seem to be a way where you can do something like FacebookResponse.PSID and pass the PSID to any sort of backend code powering the Watson Assistant.
Would appreciate if anyone can help. Thanks!
