Extrinsic 13108-1

{
  "heartbeat": {
    "blockNumber": 13106,
    "sessionIndex": 218,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x68e1d2c6f72e557e59c8420b8f9d42f3d155500be37412422e4469889c78166bbcd6ecf507c63500d06d061db01d68316876a3ee484b429c60818f8f656a598f"
}