Extrinsic 45911-1

{
  "heartbeat": {
    "blockNumber": 45910,
    "sessionIndex": 765,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x14f58547adc2c1fca308ecde13293b60ca4d3b714924de05005264f36597243cf1eab36b7a036eb71a850218d0391203d0cc204edaef979d14ecf76ab1131986"
}