Extrinsic 16244-1

{
  "heartbeat": {
    "blockNumber": 16242,
    "sessionIndex": 270,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x72cf679c2994f2eee468264ced50039db4d8a203a8bf9b18df351df9c182c849b14809757e781bf3524a4cc0695d3c1a0dd19031b4c3a354b6c5d5dd5a354985"
}