Extrinsic 11981-1

{
  "heartbeat": {
    "blockNumber": 11979,
    "sessionIndex": 199,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xbcbb26128d3ba3474391dae5614690bd0959101302e915ead8508565416f16263dc20d6eac4a911b9deba3b4c4bfcc1b3c4d4ef78d1fcbf75e05b6f4189eca8e"
}