src/sys/time/httpsdate_time_source/meta/service.cmx

{
    "program": {
        "binary": "bin/httpsdate_time_source"
    },
    "sandbox": {
        "services": [
            "fuchsia.logger.LogSink",
            "fuchsia.net.NameLookup",
            "fuchsia.posix.socket.Provider",
            "fuchsia.sys.Environment",
            "fuchsia.sys.Loader"
        ]
    }
}