Extrinsic 13720-1

{
  "heartbeat": {
    "blockNumber": 13718,
    "sessionIndex": 228,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x4eaf45526980c4ad391ff60a46a9fb11768b2ff8f3948eebfb7be8275138af2b9846f5ca0b1c431905a5178ebf9758d0cf657998ea921f027086d062a44ee88e"
}