Extrinsic 24989-1

{
  "heartbeat": {
    "blockNumber": 24988,
    "sessionIndex": 416,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x74f91a98c76c04d07acb9378753212b855e0b6226fdb511d8fb0e918cb9b762c03c1a8e0bf02462f59badaec04d2f08794dabb6be005b7e73d142b5d335ec78f"
}