获取当前用户信息

Example response

{
  "code": 200,
  "data": {
    "id": "1234567890",
    "role": "admin",
    "username": "user123"
  },
  "message": "操作成功",
  "requestId": "550e8400-e29b-41d4-a716-446655440000",
  "success": true,
  "timestamp": "2023-01-01T12:00:00Z"
}