获取当前登录状态

{
    "user": {
        "id": 0,
        "qq_id": "string",
        "display_name": "string",
        "avatar_url": "http://example.com"
    },
    "current_tenant": {
        "id": 0,
        "name": "string",
        "avatar_url": "http://example.com"
    },
    "tenants": [
        {
            "tenant": {
                "id": 0,
                "name": "string",
                "avatar_url": "http://example.com"
            },
            "role": "normal",
            "status": "active"
        }
    ]
}