Extrinsic 27220-1

{
  "heartbeat": {
    "blockNumber": 27218,
    "sessionIndex": 453,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x34e43939949d84223adcf81f89499bfe119d92b304ea963202a882aa221b397b661b584382a30e7ab3f2018684d4b31dc90e89b486d03d3574b7158b0aa28c8e"
}