Extrinsic 23921-1

{
  "heartbeat": {
    "blockNumber": 23920,
    "sessionIndex": 398,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xd036f1d90626a48bb3b07672d91d766d26b6baf9c1099c67bf773542cbcf5f3798a36106f0f85a1c3ce5b411e33f72b64cc8dcb8d0da27ea7f09a16a726c3d89"
}