Creating a subnet

I am trying to create a subnet like so

curl -X POST --data '{
    "jsonrpc": "2.0",
    "method": "platform.createSubnet",
    "params": {
    "id": 1
}' -H 'content-type:application/json;'

I get the following in response

{“jsonrpc”:“2.0”,“error”:{“code”:-32000,“message”:“couldn’t create tx: couldn’t generate tx inputs/outputs: provided keys have balance (unlocked, locked) (0, 0) but need (10000000, 0)”,“data”:null},“id”:1}

Does it mean i dont have enough balance, which accounts should have balance ? These?
How do I transfer AVAX to these accounts?