Extrinsic 22538-1

{
  "heartbeat": {
    "blockNumber": 22537,
    "sessionIndex": 375,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x06912220c6718de6ec365b2952af2b115f25be813c5f8f8b0dac59f4a22d8864dc42c49a74a1c4be83e4f8bf03e00780be2fd2af5f414d08163eff0712d86b87"
}