Yes. You can use a signer.

Raw JSON

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  "id": "22b4b3e8e1e506026a3b84d605bfb85d808c9934e69900b2994f344a695b042c",
  "pubkey": "99bb5591c9116600f845107d31f9b59e2f7c7e09a1ff802e84f1d43da557ca64",
  "created_at": 1781595827,
  "tags": [
    [
      "alt",
      "A short note: Yes. You can use a signer."
    ],
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      "client",
      "Amethyst"
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  "content": "Yes. You can use a signer.",
  "sig": "668967f83a93c95329c29b41abd9f61d6a7fc4192c268215d7f0f163b9322f6f0838b02af2cf3632944c987e17133fc60a0c67f467cc11c9e920ee49b212c47d"
}