Extrinsic 74018-1

{
  "heartbeat": {
    "blockNumber": 74017,
    "sessionIndex": 1233,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xb4788e96723ad4ff163f2ceb84f00b5b21d24e8744a46ba9027a74815aaa5624b4870e39bb5cfb7e19ec4e586819539a75843b384bfe60a354580aa4e0420984"
}