Extrinsic 123336-1

{
  "heartbeat": {
    "blockNumber": 123334,
    "sessionIndex": 2055,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x8a8389d1e55f1ecc8a267b983c78d6bfbc7938b5e62f7a6b43a92d891e2c0c62079cab587c6cd97b86910a8d6e8bce5ce24ed9c46cc088f4facf870224d32f8d"
}