{
    "0": {
        "signal": {
            "source": ["K562-ATF4.1x36mers.hg38-no-haps.unique.5p.plus.bigWig", 
                       "K562-ATF4.1x36mers.hg38-no-haps.unique.5p.minus.bigWig"]
        },
        "loci": {
            "source": ["K562-ATF4.bed"]
        },
        "background_loci": {
            "source": [],
            "ratio": []
        }
    }
}