[Express-js] doubt of how to persist a model from email after the form is submit waiting a response from the admin server

The point is i want to send an object to server in format json after the admin see the email to approve it, when the admin decide if ok, in the email i put a link to redirect to http//:www.myapp.net/signup/ok url, so when the admin press on the link the page redirect and then the object have to be saved in the database, how can i save an object with this approach? I don't know really if this is a good way to do that, I will be attentive if you had some advices. Thank you so much.



> The point is i want to send an object to server in format json after the admin see the email to approve it, when the admin decide if ok, in the email i put a link to redirect to http//:www.myapp.net/signup/ok url, so when the admin press on the link the page redirect and then the object have to be saved in the database, how can i save an object with this approach? I don't know really if this is a good way to do that, I will be attentive if you had some advices. Thank you so much.
I answered this question as best I could on the nodejs Google group:

https://groups.google.com/forum/#!topic/nodejs/t4H1RQik83w