Extrinsic 41324-1

{
  "heartbeat": {
    "blockNumber": 41322,
    "sessionIndex": 688,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x4cb37225ff71bf55e40a7932a8c05bdc581e29f1dcbf3822910643f8d8412f29f03d5ac32ec926492f205f64eb276a1a96aca8fb20583b94600b3ad4b7934b8c"
}