Extrinsic 75820-1

{
  "heartbeat": {
    "blockNumber": 75819,
    "sessionIndex": 1263,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x34354fb0b6b6d0dc36dbc5cd43807a224e953e011ea14f636a584533e2392b324d26bcb03c907e26d21958ba3ee808fefea161905c9d382896a1127a3400b38f"
}