sample_updater/res/raw/sample.json

{
    "__name": "name will be visible on UI",
    "__url": "https:// or file:// uri to update file (zip, xz, ...)",
    "__type": "NON_STREAMING (from local file) OR STREAMING (on the fly)",
    "name": "SAMPLE-cake-release BUILD-12345",
    "url": "file:///data/builds/android-update.zip",
    "type": "NON_STREAMING",
    "streaming_metadata": {
        "__": "streaming_metadata is required only for streaming update",
        "__property_files": "name, offset and size of files",
        "property_files": [
            {
                "__filename": "payload.bin and payload_properties.txt are required",
                "__offset": "defines beginning of update data in archive",
                "__size": "size of the update data in archive",
                "filename": "payload.bin",
                "offset": 531,
                "size": 5012323
            }
        ]
    }
}