Extrinsic 138468-1

{
  "heartbeat": {
    "blockNumber": 138467,
    "sessionIndex": 2307,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x281b785aa361e2f100fe0e978cca8f6719eccfa028bae23acfbc0435a8b6096bd92f9b6942dd3b05d12810b228cbebb09d5b552b14629dd3018e1328d6857b85"
}