Как добавить значение ключа во вложенный словарь Python?

Question

[Emince]

Требуется поменять внутри fst_token_info значение ключа name с fdf на doge, не могу ни как добраться до name. Пробовал через if name = ..... , пробовал через dict.update, не получается.

data = {
    "address": "0x544444444444",
    "ETH": {
        "balance": 444,
        "total_in": 444,
        "total_out": 4
    },
    "count_txs": 2,
    "tokens": [
        {
            "fst_token_info": {
                "address": "0x44444",
                "name": "fdf",
                "decimals": 0,
                "symbol": "dsfdsf",
                "total_supply": "3228562189",
                "owner": "0x44444",
                "last_updated": 1519022607901,
                "issuances_count": 0,
                "holders_count": 137528,
                "price": False
            },
            "balance": 5000,
            "totalIn": 0,
            "total_out": 0
        },
        {
            "sec_token_info": {
                "address": "0x44444",
                "name": "ggg",
                "decimals": "2",
                "symbol": "fff",
                "total_supply": "250000000000",
                "owner": "0x44444",
                "last_updated": 1520452201,
                "issuances_count": 0,
                "holders_count": 20707,
                "price": False
            },
            "balance": 500,
            "totalIn": 0,
            "total_out": 0
        }
    ]
}

#
print(data)
data['ETH']['total_diff'] = 100
print(data)
for i_key in data['tokens']:
    for i_skey in i_key.values():
        print(type(i_skey['name']))