Definitions of subscribe:

• verb:   receive or obtain by regular payment
• verb:   offer to buy, as of stocks and shares

  Example: "The broker subscribed 500 shares"

• verb:   adopt as a belief

  Example: "I subscribe to your view on abortion"

• verb:   pay (an amount of money) as a contribution to a charity or service, especially at regular intervals
• verb:   mark with one's signature; write one's name (on)