plugeth/cmd/geth/testdata/clique.json

{
  "config": {
    "chainId": 15,
    "homesteadBlock": 0,
    "eip150Block": 0,
    "eip155Block": 0,
    "eip158Block": 0,
    "byzantiumBlock": 0,
    "constantinopleBlock": 0,
    "petersburgBlock": 0,
    "clique": {
      "period": 5,
      "epoch": 30000
    }
  },
  "difficulty": "1",
  "gasLimit": "8000000",
  "extradata": "0x000000000000000000000000000000000000000000000000000000000000000002f0d131f1f97aef08aec6e3291b957d9efe71050000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
  "alloc": {
    "02f0d131f1f97aef08aec6e3291b957d9efe7105": {
      "balance": "300000"
    }
  }
}