Extrinsic 48880-1

{
  "heartbeat": {
    "blockNumber": 48878,
    "sessionIndex": 814,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xe4ca746acdf65da5e530e998c26bf9d2827814376e791e8eb368dccd97c7d26224993d53c0cb108b17e89a6d7a36ae78de015252fe2b132792983d666de28f87"
}