Extrinsic 14962-1

{
  "heartbeat": {
    "blockNumber": 14961,
    "sessionIndex": 249,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xd666e83067219998e571596ba604ee47bbb20ba096ae4b4edf412465c56cfc45e90e7977fa930e067977ee99d6d19acb2fdd15f82a5d7396beca04e0abea9a8f"
}