Extrinsic 22428-1

{
  "heartbeat": {
    "blockNumber": 22426,
    "sessionIndex": 373,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x120077a21574ee87a14817e5017ae4ad95dddcc2047a83b113ea45040686b4275bbb07d22ae51b64caa228af29ac6e3e4bb17fbe3f2c19775fadb368b005418a"
}