Extrinsic 30408-1

{
  "heartbeat": {
    "blockNumber": 30407,
    "sessionIndex": 506,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xdad48e5a72d491cbabdf5909c1321bad76f0ce14cd509bb7311d343e9b94a17c6e5677d2bd7eac4afd8cc7d98d3fbd8b43a219eb52292b2ade878d214a02f884"
}