Extrinsic 6734-1

{
  "heartbeat": {
    "blockNumber": 6733,
    "sessionIndex": 112,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x326471e5e75502f6a75ba6f2d90fb33f0eebaf951cdf2e1a19c4b577f91c52296b42f365bb437f7a912eb1e83c106ad668d34197cfa45751c0df8e30baf60d88"
}