Get a group

curl --request GET \
  --url https://api.onchainden.com/api/v1/groups/{groupId} \
  --header 'Authorization: Bearer <token>'

const client = new DenClient({ apiKey: 'ck_live_...' });
const group = await client.getGroup('grp_123');

{
  "data": {
    "id": "grp_123",
    "name": "Finance Team",
    "members": [
      {
        "id": "mem_123",
        "name": "Alice",
        "type": "user",
        "walletAddress": "<string>"
      }
    ],
    "createdAt": "2023-11-07T05:31:56Z",
    "updatedAt": "2023-11-07T05:31:56Z"
  }
}

{
  "error": {
    "code": "unauthorized",
    "message": "Invalid API key"
  }
}

{
  "error": {
    "code": "notFound",
    "message": "Resource not found"
  }
}