Extrinsic 74493-1

{
  "heartbeat": {
    "blockNumber": 74491,
    "sessionIndex": 1241,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xf47e1004ff75448e1f91ecddfbfd42975396de92fe0aaf64f92160a4dd18b569bc6729a27b328a8b8aca4944d92beb0a5a4994afcb8055c5e9959bab6fa41a81"
}