Extrinsic 45340-1

{
  "heartbeat": {
    "blockNumber": 45339,
    "sessionIndex": 755,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xde7104689f44ff074cf19a43c2b2cb2a55a73a9d9044aca2a157fe2104d9b8417f6b42472f792ae1ece25d5d1c5e6316e546242e7807db83bcf0e101be629b8f"
}