Extrinsic 34644-1

{
  "heartbeat": {
    "blockNumber": 34643,
    "sessionIndex": 577,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x2a0a7a54b4e5f6a8a87e79e818a122061ac39a84288d3bc4656d851ca8d92b2271542311886025fabad24197af014c8c4132daed7c4af062e8c88c59ba2f9589"
}