FF2K on Nostr: Can somene help me understand how big these blocks are? Last block below 852406, says ...

Can somene help me understand how big these blocks are? Last block below 852406, says the cache = 57.2MiB, isnt that like 54MB?
Published at
2025-02-07 20:28:59Event JSON
{
"id": "b1e7cebb80322f4b7303bf8ba372fe53a98fdf3063384c155b114e42bb61fac7",
"pubkey": "446910390c724fa4c4f70d49e3f59c2a85eeea326ebe598c3f151bfd5e69b074",
"created_at": 1738960139,
"kind": 1,
"tags": [
[
"r",
"wss://eden.nostr.land/"
],
[
"r",
"wss://nos.lol/"
],
[
"r",
"wss://relay.damus.io/"
],
[
"r",
"wss://relay.nostr.bg/"
],
[
"r",
"wss://relay.snort.social/"
],
[
"r",
"wss://relay.nostr.com.au/"
]
],
"content": " https://m.primal.net/OVKQ.png Can somene help me understand how big these blocks are? Last block below 852406, says the cache = 57.2MiB, isnt that like 54MB?\n",
"sig": "01a7bf2412fe6535612608f8491932a828051bba3b5724e80ac36af73b4c99fd0a2c05ed891ce546942b656ebfc896e6a96566e0bca613927eecae87a5ff4aca"
}