Extrinsic 23915-1

{
  "heartbeat": {
    "blockNumber": 23914,
    "sessionIndex": 398,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x7ad374568ad76d4cca18592b1c80f9fe818fddb2930bf4fbeaea1805e9ff965d33be36ad0e0e81902a6661b6e48157c8984be6955516baa50f91741ceeb65c8b"
}