updateCenter.post(
{"connectionCheckUrl":"http://www.google.com/", // has to be here because updateDirectly sniffs only very limited formats
    "core": {
        "buildDate": "Dec 31, 1969",
        "name": "core",
        "url": "jenkins.war",
        "version": "23"
    },
    "id": "default",
    "plugins": {
        "tasks": {
            "buildDate": "Dec 17, 2008",
            "dependencies": [],
            "developers": [{"name": "lokadm"}],
            "excerpt": "   This plug-in scans for open tasks in a specified set of files in the project modules   and visualizes the results.  ",
            "name": "tasks",
            "requiredCore": "1.264",
            "sha1": "wtzlciUKiMcg90H5CTYkGX6+r8Y=",
            "title": "Jenkins Task Scanner Plug-in",
            "url": "tasks.jpi",
            "version": "2.23"
        },
        "dummy": {
            "buildDate": "Dec 17, 2008",
            "dependencies": [],
            "developers": [],
            "excerpt": "…",
            "name": "dummy",
            "requiredCore": "1.100",
            "sha1": "wtzlcjUKiMcg90H5CTYkGX6+r8Y=",
            "title": "Dummy",
            "url": "http://nowhere.net/dummy.hpi",
            "version": "1.0"
        }
    },
    "updateCenterVersion": 1
}
);