Event JSON
{
"id": "f8635448c09b34bab2c1b3c761fe5878d49e4b46787a7c1a8d0e943bbe51640b",
"pubkey": "dbf0becf3483602e3a733452954d31328d9274f83f0fe910ea09df49b5b0bd21",
"created_at": 1736957074,
"kind": 1,
"tags": [],
"content": "null は有効な json 文字列とか(?)",
"sig": "6999eceab86af075c4838a73fc4b1bfeae00f3a93c60ff7493b7afeef173c970493a1251c93bbbe4e1ce7831fbd8d3063840066ba43e0da134baa7a0103c39e1"
}