Extrinsic 31399-1

{
  "heartbeat": {
    "blockNumber": 31397,
    "sessionIndex": 523,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xc0e781bacec830de5ede4163717fbc5243aec2bdb1f91dddc7f6c3ed613cf92e0c76fb5a729e1c44dbbd4f01b0e8792d7e2fcd40abfa3cd96f661693bc685a8f"
}