Extrinsic 43591-1

{
  "heartbeat": {
    "blockNumber": 43589,
    "sessionIndex": 726,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xac98ecea9e13fe38de6a80dbc8e6eb3438175f4e018b7811c392a423a1adda51cb20d1c7fb2d6ccb97e03a46402cc28487a23d901755163ae4c7ecc2a3410c83"
}