St on Nostr: 3/7 是什么？

{ "id": "e65b22254d608b85bbe007a354f25bea29ff86e65237c4a63e26539e18b99cfb", "pubkey": "9a57958f0bf27a20d6ce2e604b8bb58630b8d97f19a9fc7edd620a79f4289510", "created_at": 1675247515, "kind": 1, "tags": [], "content": "3/7 是什么？", "sig": "aa020e60722ce3c74cfcfb204c4bf964e450c666dcebe8fbd962ed78c0893a5c5e0164b6aac03f24f0277a0bbc73e427109dddf0c49adb7626d2b0a7bf5a9f3f" }