Extrinsic 41355-1

{
  "heartbeat": {
    "blockNumber": 41354,
    "sessionIndex": 689,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xdc5b3f2fdad9e71cc427294514377d99d7cbde684727ab51054eaed2f2034917e7fd348eb208224e661b8206aab7a6462d5b5d308d4a4529c50872d39c17a28c"
}