示例值:eyJvcyI6ImFuZHJvaWQiLCJ2ZXJzaW9uIjoiMy4zLjQuMSIsInBhY2thZ2VzIjoiY24uVHVIdS5hbmRyb2lkKiY2LjU4LjAiLCJwcm9maWxlX3RpbWUiOjkxMiwiaW50ZXJ2YWxfdGltZSI6MTksInRva2VuX2lkIjoiK2xFTkJsTHFwSnhVdnhEYnN4UlVKUGZraXErT0twN21MdUZvRTN3WGRwWnBcL1diQWhvcU94MlVZM1BuN2g4VFMzaDJKazRHTHpcL2l0UUg2V1FVNHlGdz09In0=