Extrinsic 45164-1

{
  "heartbeat": {
    "blockNumber": 45163,
    "sessionIndex": 752,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x18f5303e404738b2b9d00081761c30c86c73dade4b16beecc1f10761cb4acb13125191d631b33f0087b413630f2b3ce2e67d91a07e6d91e2579b30255b305c8e"
}