Extrinsic 12040-1

{
  "heartbeat": {
    "blockNumber": 12039,
    "sessionIndex": 200,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xb43d3ddeaf120b2907d57cf5195b617691a1902745f24168202b552399fe66561929285737e01da43f47191375a87910fb240f5f5110cf2920be84b7bedab38c"
}