Extrinsic 23376-1

{
  "heartbeat": {
    "blockNumber": 23375,
    "sessionIndex": 389,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x38b452c120c0ee7b20ba9488f1bbb1ee4dd0ce6337650a517b59fd072013170d79cec5fe6d8afd432141ad977ec22de6999ef1b8931cb049a380f263014e2c85"
}