Extrinsic 40188-1

{
  "heartbeat": {
    "blockNumber": 40187,
    "sessionIndex": 669,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x84d40ce0edda2f71d052de7b1fb69507c22eab29227078e994f41883e215a72eabfd668861780ae0683780ea354c0dbba455ea436dbd77995240cf9c8f60ee8d"
}