{
    "contexts" : 
    [
        "Context A"
    ],
    "middleboxes" : 
    [
        {
            "url" : "127.0.0.1:8423",
            "readAccess": [0],
            "writeAccess": [0]
        }
    ],
    "slicedData" : [
        { 
            "slice" : 0,
            "data" : "This is slice 0 data from the client, which the middlebox can see"
        }
    ]
}