Extrinsic 33504-1

{
  "heartbeat": {
    "blockNumber": 33502,
    "sessionIndex": 558,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x28c99923305e4155cb925b4f5f653f22a50ecb87840126c70fd68fdc8bc5cc758842d39ecb8e59c5f0d17ba6db50ad5ba37e8b615dbd865e35b4a54fffb3338a"
}