Extrinsic 13725-1

{
  "heartbeat": {
    "blockNumber": 13723,
    "sessionIndex": 228,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xfad178a11283a815f7060e568a2bc13b1abb12b720874fa85e6440178286421a82fad3c22373f903d8449756650cfc7c7378a99853b040044499713c1990558b"
}