Extrinsic 22900-1

{
  "heartbeat": {
    "blockNumber": 22899,
    "sessionIndex": 381,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x020d789b1241b3a9f2003b42dc287e53912027d0157eb58927a33398667c2026467e875999a5911bf35149a52745745513f1d49c3797d996a212d21a9463368c"
}