Extrinsic 45489-1

{
  "heartbeat": {
    "blockNumber": 45488,
    "sessionIndex": 758,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x844cde56e5b015d83f4207d395d2ca27ff3ba935dbc7c1e905f4654b580c6545f2d289abbb3a757addb34deb8b2dd3d08cc3634547c6ef1cb2f1d1c00acbd987"
}