Extrinsic 39339-1

{
  "heartbeat": {
    "blockNumber": 39338,
    "sessionIndex": 655,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x62e487a77dc4bb61324a497a71bd0a6d3ddec37104eb2a008af5fe64a250ad728443215432b69ca3b4fa056d2f8221992413a1914ca4624c0aeb6d2799ce9082"
}