Extrinsic 46-1

{
  "heartbeat": {
    "blockNumber": 45,
    "sessionIndex": 0,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xe65bc0078b346939028a189cd5c4a73ca1156c005a69761a45fc9190084df5264f7af2fdcd756e3666714e0373c6fd0d1fe331ce89b2a7fbc2cb9706407dbc8c"
}