Extrinsic 24500-1

{
  "heartbeat": {
    "blockNumber": 24498,
    "sessionIndex": 408,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x48896526a4a9900da829abddf6f91840fb03cef0448712a7aa6ed540f7ca4a19acc1a1649a7096380459965d7f4d425e6b8bd0f016aa8c16c7c6e1d6d77ba582"
}