hardhat_config.js

fuji: {
      url: 'https://api.avax-test.network/ext/bc/C/rpc',
      gasPrice: 225000000000,
      chainId: 43113,
      accounts: [ 
        "0x7727b8bf7f114f93cede28f67da7ac4fbcd34d481f4bb1597256102985ebea17", //private key
        "0x40c933e2b79efc76286ad0190d64eeg43dd6724a4b2674bb2f83ac63c2aabe19",
        "0x1637e4c222057f9d3b177d7a5dd1aba62baf9ebe0fa511cb2944b0e70b062a68",
        "0x5a4758ffb1216ab80ce6c6fa374833f1f10f1966ca9ff7fa13332e4bd78d43c7",
        "0x4d4849a8d599a6adc9d58a3b76fcf90dcedea99fed5a425dc4f4a55f120ce8e8",
        "0x55b0038ec308093065baffe2fca39164a31a79ecbf284fc1962aa5046f01b54a",
      ]
     }