Extrinsic 173781-1

{
  "heartbeat": {
    "blockNumber": 173779,
    "sessionIndex": 2896,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x9c6f38c54c420d6099a6fc42777e64676a2b3c7e3db174c6e393bb93cf586a19987dfb6e3eda3d02858540b092c9fc52247ac8106a3b37e386cf015b62a7ac84"
}