The answer to your request: /id/feedis the default answer. To access more data, you need to pass a parameter fieldswith the keyword of the data you want to receive.
For instance: <id>/feed?fields=id,message,picture,shares
:
{
"data": [
{
"id": "1234567890",
"message": "Message",
"picture": "http://fbcdn.com/xxxxxx.jpg",
"shares": {
"count": 0
}
}
}