Extrinsic 6828-1

{
  "heartbeat": {
    "blockNumber": 6827,
    "sessionIndex": 113,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xf6c70df3a2240b6abbad77ee1b74414194612dfab04a580c21f2167ed8a858223ecdaaf9be0acfa29e0b8076b1fad39e65965896a114909688033bd94209e38d"
}