Extrinsic 27434-1

{
  "heartbeat": {
    "blockNumber": 27432,
    "sessionIndex": 457,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xa2573efb857062e66adba92a154faa29ed6698183aca5c6ac85c370732e859349b6a3cb36dc3e134b06d7e083ebbef27e65ddbdd8471cb3c3d1849bbff0e7b8a"
}