Fix slot values in Rasa Bot from flask api

Hi, I am deploying bot to FB messenger and trying to login from my client website for that messenger redirect to that website. Now after login website will send them some token which I get through Flask API. Now I want to collect that token and set that in the slot can I do that? If yes, How?

@akelad @Juste @juste_petr @Ghostvv @smn-snkl

Process Flow:

FB Messenger #1 -------> Client Website for Login #2 —(token)----> My Flask API #3 ------(token)------> RasaBotTokenSlotSet #4

I have completed till step #3 got stuck in passing token from step #3 to #4.