Extrinsic 74434-1

{
  "heartbeat": {
    "blockNumber": 74433,
    "sessionIndex": 1240,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x600b8783cd38d65f46c505993ef2f1f8012cb8f5e172b32b329be3dd49c23f446e33b1960ddc2a2b9a0c07785f6b18b8759f9be2386cacec566385d19e0dc980"
}