Here is a list of what you can do:

POST /=/subscribe

Subscribe an email address to a mailing list.

You'll need to POST this request in the following JSON format:

 
{
   "email" : "user@example.com",
   "list" : "listshortname"
}

Returned will be a JSON document with this format:

 
{
   "status" : 0,
   "errors" : {
      "subscribed" : 1
   }
}

status will be set to, 1 if there are no problems. If there are problems status will be set to 0 and errors will have an associated array holding what problems there were.