If I am logged in to the site (I've been given a security token, for example), when I send a GET to the same endpoint for a talk I submitted:

submissions0001-owner.json

{
  "Id": "0001",
  "Title": "An Awesome Talk",
  "Abstract": "Magnificent abstract goes here...",
  "Status": "Submitted",
  "Links": [
    {
      "Href": "http://example.com/api/submissions/0001",
      "Rel": "self",
      "Method": "GET"
    } ,
    {
      "Href": "http://example.com/api/submissions/0001",
      "Rel": "change-submission",
      "Method": "PUT"
    }
  ]
}