Extrinsic 44917-1

{
  "heartbeat": {
    "blockNumber": 44915,
    "sessionIndex": 748,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xdc3ab35739dfb7a1ec28cd9ab52c7813f5c91df5bfd6fa8ab4e982c95e1ae94cf971f21e428958f4410d27227d5662aadc2571f0d22965f2bd770cc0c052958e"
}