示例值:eyJvcyI6ImFuZHJvaWQiLCJ2ZXJzaW9uIjoiMy4zLjQuMSIsInBhY2thZ2VzIjoiY24uVHVIdS5hbmRyb2lkKiY2LjU4LjAiLCJwcm9maWxlX3RpbWUiOjY3MSwiaW50ZXJ2YWxfdGltZSI6MywidG9rZW5faWQiOiJUK0I3d2syY3VoaHFHbU03SFpmOElDSWwya2ZoV3ZZb3k2S2NFNXRiUStLUjh0NnFpVjRoVEdqeCtnbXRwWnlQTWowbVlcLzVvbTJtXC9Qb2NtV0VNRld3PT0ifQ==