Extrinsic 2714-1

{
  "heartbeat": {
    "blockNumber": 2713,
    "sessionIndex": 45,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xd24fa37cd682d27df6f4eb1daf4f780a2f053216dabb43c3a06a165c0e3dd84e3231d804107cbf63164114776bced9f242f13ec35c4e6d8cafbd56d6ee96378f"
}