{
    "name": @username,
    "first_tags": [<tag_obj>,...], //first 5 tags
    "tags": "/users/@username/tags", //hyperlink to all user tags
    "network": "facebook|twitter"
    /* last_preview: <timestamp>,
    //hyperlink to user updates since last_preview except updates>previewed=true
    updates: "/users/@username/updates"
    updates_count: "/users/@username/updates/count"*/
}

{
    last_preview: <timestamp>,
    name: @tag_name,
    first_users: [<user_obj>, ...],
    users: "/tags/@tagname/users", //hyperlink to all users of this tag
    //hyperlink to tag updates since last_preview except updates>previewed=true
    updates: "/tags/@tagname/updates"
    updates_count: "/tags/@tagname/updates/count"
}

{
    "name": "smart list #1",
    "first_tags": [<tag_obg>, ...],
    "tags": "hyperlink to tags",
    first_users: [<user_obj>, ...],
    users: "/lists/@listname/users", //hyperlink to all users of this tag
    "updates": "hyperlink to updates",
    "updates_count": "hyperlink to updates count",
    "last_preview": 12345678910
}

{
    user: @username,
    timestamp: <ts>,
    previewed: false|true,
    text: <string>
}