Extrinsic 45277-1

{
  "heartbeat": {
    "blockNumber": 45275,
    "sessionIndex": 754,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x52165e9aeab8f6cd5d28a7197ffa4aa8b73bddb1b614b92a19101b6f30fc5b06c37b97052135bc69edd1df27cf07f6614f21e4f7ff24b4d605f4f6bc6b0bfd88"
}