s data
    "fees" : {
        "base" : n,         (numeric) transaction fee in BTC
        "modified" : n,     (numeric) transaction fee with fee deltas used for mining priority in BTC
        "ancestor" : n,     (numeric) modified fees (see above) of in-mempool ancestors (including this one) in BTC
        "descendant" : n,   (numeric) modified fees (see above) of in-mempool descendants (including this one) in BTC
    }
    "depends" : [           (array) unconfirmed transactions used as inputs for this tr