Extrinsic 23378-1

{
  "heartbeat": {
    "blockNumber": 23377,
    "sessionIndex": 389,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x648e4a433280b3e2b8b48b26ff3e4428372e0d2aba4523c6715261635b858a3c23aa6a37024e8b87050ea0755af1f53616ceb5d16c030e17fae7dca55d994e87"
}