looking for a plugin to keep track of membership, block certain content

I am creating a website for a newspaper. I plan on using paypal buttons in order for people to subscribe to the online editions of the newspaper on this website edition. Paypal will notify me when people pay for certain subscriptions, but I need something where customers can type in their information for the subscription and it will be automatically saved and listed so that I don’t have to go to my dashboard every time someone wants to subscribe and add them myself. Also, I need a plugin that will allow those people who are subscribed to see all of my content, while people who aren’t subscribed will only be able to see some content. Please help!