Extrinsic 16056-1

{
  "heartbeat": {
    "blockNumber": 16054,
    "sessionIndex": 267,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xbca811461ac31b18a1950d6d6f0a8da07761b12e83e642e013efedddad603c569d5143355b86904a1a1c8b43772cd05207aea531e5482f9ba68911c1c8c29e80"
}