1. The user sees and clicks an advert for the service
2. The user is taken to the landing page
3. The merchant calls Evina to generate a script
4. Evina returns a response to the merchant with the script
5. The merchant shows a MSISDN entry form to the user with the Evina script loaded
6. The user enters their MSISDN and clicks Subscribe
7. The merchant calls the GetCheckoutUrl API
8. Infomedia returns a response with a tokenised URL
9. The merchant redirects the user to the URL
10. The user is redirected initially to Infomedia
11. Infomedia calls Evina's API to perform a fraud check
12. Evina return a fraud result
13. Infomedia redirects the user to Evina
14. The user is redirected to Evina's checkout
15. Evina sends a PIN SMS to the user
16. Evina shows a PIN entry form to the user
17. The user enters the PIN and clicks the Subscribe button
18. Evina sends a confirmation webhook to Infomedia
19. Infomedia sends a Welcome SMS to the user
20. Infomedia sends a Subscribe webhook to the merchant. This is an asynchronous process
21. Infomedia redirects back to the merchant
22. The merchant redirects the customer to the service