Extrinsic 27188-1

{
  "heartbeat": {
    "blockNumber": 27186,
    "sessionIndex": 453,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xa8d52e25668a64d3ad6c290803892308d396f2fd0874f209544f74d16ee8a030915677e5086a046310142d7efc15654fe5cf3de8a8d4c4139503cbe1378df28f"
}