Extrinsic 73705-1

{
  "heartbeat": {
    "blockNumber": 73704,
    "sessionIndex": 1228,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x1076e8e36f9a488ced109483231f692621196821ddb4edc0d40afe460cc390740d6316bd8d4e5428a2042a5968eec1d8fb53a290269b09f3b2d4f7f48734a989"
}