Extrinsic 23961-1

{
  "heartbeat": {
    "blockNumber": 23959,
    "sessionIndex": 399,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xd4bb910fe6ba103ca23daf544aa1d11655e6b1d8a5aba87a4369a8c9fe73646951951cd41505177f8be9d74e77883988e58256bf72dcfc87280ab327d0801987"
}