Extrinsic 62321-1

{
  "heartbeat": {
    "blockNumber": 62320,
    "sessionIndex": 1038,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xb402a8b51248dbed22ba68082939cfb8b1cfe953ee1481b45bdb34858cd9ab31b7179a79c223fb4abc61814138d403b69fbb0fbfca5a79d4b4b9034203bd578a"
}