Extrinsic 44916-1

{
  "heartbeat": {
    "blockNumber": 44914,
    "sessionIndex": 748,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xc2b9f5ed5e78844b214f55618783e1b9ca914772284e28374fc8fba00c80150e465d8bc4543363204a989be995eec989fb62eb6f233d8abcbc2936f2317d8d84"
}