Extrinsic 23477-1

{
  "heartbeat": {
    "blockNumber": 23475,
    "sessionIndex": 391,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x9e7d98b9955c03bda42a016e59ce41b3aac27c919c34d41ee4a1fa45f0c9054965ba7debfe4bb876a71b40b4a9145dfb15675983061b33e700b210e17b6d3587"
}