We have a simple requirement of creating a subscriber in an Exact Target Org from an external Salesforce Org. The requirement is on webpage on click of a sign-up button the user email id will be used to create the Subscriber in Exact Target Org.
We could figure out the way to get the Auth Toker using REST Call to https://auth.exacttargetapis.com/v1/requestToken The next step would be to use this Auth Token to create the subscriber.
Our doubts are: 1) Can this be done using REST API call? 2) Is we need to use SOAP, is there a necessity to create a middle-layer application? 3) If not, has anyone done this kind of Integration and help us on the steps to proceed?