Extrinsic 23448-1

{
  "heartbeat": {
    "blockNumber": 23447,
    "sessionIndex": 390,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xc0fd441c380a63c89c14b4fa03b1333c8757af69b4f92e97c3ece030e76ca5535a3dbfc84506fda39feed7943a66c5a64a9b8472baf9d26da170dfcb6e3b1789"
}