Extrinsic 45197-1

{
  "heartbeat": {
    "blockNumber": 45195,
    "sessionIndex": 753,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x6038c8d696e89922bc0c179a3e9e796e3320716f38433b20d1546a3c42ac5d7c3da4a7508607a2d20c2706ffe8fd8ee598514f060ebb304e8ba8e6b44f57d582"
}