Implement webhooks on my website

I have a website, where I am selling a Software through, which is subscription based. The subscription is paid through Stripe and managed through Servicebot. The user has to enter a key he gets into the software, which will then be checked for validity. Requirements - The user creates an account on the website - User selects how many instances he wants (ServiceBot) - Website gets called by web hook by ServiceBot or Stripe and generates the needed count of keys and saves them in the metadata in Stripe or ServiceBot together with a) a flag if they are in use or not, and b) a last check date - The user can see his keys, if they are in use and their last check dates on the website (e.g. Servicebot) Validation afterwards: - The user inputs one of his keys in PowerPoint, PowerPoint calls the /pplogin endpoint of the website. The website returns 200 OK when the key is "valid" and "unused". The website flags the key as "in use" and saves the current date as last check date for the key. - Everytime the user opens PowerPoint, PowerPoint calls the /ppcheck endpoint of the website. The website returns 200 OK when the key is still valid. The website also renews the last check date for the key. - The user presses logout in PowerPoint, PowerPoint calls the /pplogout endpoint of the website. The website flags the key as not in use. - When a key was not checked for 30 days (The last check date for the key is older than 30 days), Wordpress flags the key as not in use. - Please copy paste "Hello Lukas - I have seen all of the requirenments and validations" into your offer, so I know you have read all requirenments These requirenments should be inplemented into the Wordpress Website / Stripe/Servicebot.