d1 = {1: "hui", 3: "pizda", 2: "vzxcv", 62634: "fsfs", 4231: "fasfscv"}
d2 = {"vzxcv": "tri", "hui": "odin", "pizda": "dva"}
res = {k:d2[v] if v in d2 else v for k, v in d1.items()}
print(res)
CmQxID0gezE6ICJodWkiLCAzOiAicGl6ZGEiLCAyOiAidnp4Y3YiLCA2MjYzNDogImZzZnMiLCA0MjMxOiAiZmFzZnNjdiJ9CmQyID0geyJ2enhjdiI6ICJ0cmkiLCAiaHVpIjogIm9kaW4iLCAicGl6ZGEiOiAiZHZhIn0KcmVzID0ge2s6ZDJbdl0gaWYgdiBpbiBkMiBlbHNlIHYgZm9yIGssIHYgaW4gZDEuaXRlbXMoKX0KcHJpbnQocmVzKQ==