Extrinsic 17622-1

{
  "heartbeat": {
    "blockNumber": 17621,
    "sessionIndex": 293,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xb46d997edbb03861d9835bfe9a460acf10521656fa3a9dc07823fa541d7d70657a6f19587c0480aa465b42bd021149827881b0bcc9f2b46f447beec92945d589"
}