Extrinsic 45383-1

{
  "heartbeat": {
    "blockNumber": 45381,
    "sessionIndex": 756,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x26adc83df6070a37a933da5f98f46e1ee342a5172a74cef21b01f27e7737cd3675b06011f1b4257f5ad0322487a5b7fa855b33428c57ee597401fb4ca2b5cb87"
}