It can be done either way. Client side or relay.

Raw JSON

{
  "kind": 1,
  "id": "34063e2e744a5c7010df3473e79c6c7dd68b07436fbb9287b645343bc0520dc4",
  "pubkey": "000000005e9dda01479c76c5f4fccbaebe4e7856e02f8e85adba05ad62ad6927",
  "created_at": 1780007462,
  "tags": [
    [
      "alt",
      "A short note: It can be done either way. Client side or relay."
    ],
    [
      "e",
      "0356ea6aaf1a25c319825a9644e8b6268fb486aab2d49ed851d10492880ba920",
      "wss://relay.mostr.pub/",
      "root",
      "c6f7077f1699d50cf92a9652bfebffac05fc6842b9ee391089d959b8ad5d48fd"
    ],
    [
      "e",
      "863be7b102b3139af924fa9d3a7576b81b16b7c5a8cc7982ba2f999972d508b4",
      "wss://nostr.mom/",
      "reply",
      "56e7c32fc9bde6f06e91760cc33a8facd2f21e9d468d153635a655b30a4c0882"
    ],
    [
      "p",
      "c6f7077f1699d50cf92a9652bfebffac05fc6842b9ee391089d959b8ad5d48fd",
      "wss://nostr.bitcoiner.social/"
    ],
    [
      "p",
      "56e7c32fc9bde6f06e91760cc33a8facd2f21e9d468d153635a655b30a4c0882",
      "wss://nostr.mom/"
    ],
    [
      "client",
      "Amethyst"
    ]
  ],
  "content": "It can be done either way. Client side or relay.",
  "sig": "1fa29db4754df2d7aa688dc7a8854eeca7f0551f9ba5a44885fbea84c5f5855835607b7d0fec000761b992c75338251fa69bfa3268e1aebdfaf1965412e7624a"
}