Extrinsic 45028-1

{
  "heartbeat": {
    "blockNumber": 45026,
    "sessionIndex": 750,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x30bbfe77df2b45bea0621bacd507fff1423ff508a8f4a00cbc52ab4ae86b1b7be116f81db73af3a01b5b62b9395babe0063b4554d80365b7a93a6e3e2bba1d8b"
}