Extrinsic 44917-2

{
  "heartbeat": {
    "blockNumber": 44916,
    "sessionIndex": 748,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xf230bec3f1b082d6c015491cb498863ae824b8f6cc838781ef2ad915fa8989483b608044187c13f438d6dbe9625df6fa0e7eb65aeb5453d43dddadf39d9b7082"
}