genesis.json for local test network with accounts preloaded

genesis.json

{
    "config": {
        "chainId": 15,
        "homesteadBlock": 0,
        "eip155Block": 0,
        "eip158Block": 0
    },
    "difficulty": "400",
    "gasLimit": "2100000",
    "alloc": {
        "0xfa4e08705260990257f8b2b145d9601ab6a3e84b": {
            "balance": "123456789"
        },
        "0x5db943431beb852b88a51be2bbf77e6c411bdf12": {
            "balance": "987654321"
        }
    }
}