Extrinsic 45042-1

{
  "heartbeat": {
    "blockNumber": 45040,
    "sessionIndex": 750,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x06d97d280b79de8e3dd52882869fe893d4c12f51f86cb58c03569e5cbb4b34548dae16d6391d07ef8da04df73ba96afcc4c4d26d8853e589863079269a61e889"
}