Extrinsic 41866-1

{
  "heartbeat": {
    "blockNumber": 41864,
    "sessionIndex": 697,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x546f9f22652f6590adc29320655a5f8323781bbb9dbc1bbb8d762244f07ef37146846d9e41e6d0170fc9f79764df5e834715787696fd908c2bcbc8e11602da86"
}