Extrinsic 27573-1

{
  "heartbeat": {
    "blockNumber": 27572,
    "sessionIndex": 459,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x3afdd0e95e23f21cf2b19942b7fe50113e9ef43f7a3630208ba047366f3073050adaa1479251c61eeb7a714e6d14480f99460fed3b49c8d18f0bb9718dbc5f8f"
}