create a new user with KeyStore API in Avalanche

create_user.sh

curl -X POST --data '{
     "jsonrpc": "2.0",
     "id": 1,
     "method": "keystore.createUser",
     "params": {
         "username": "testuser_jp01",
         "password": "<your user password>"
     }
}' -H 'content-type:application/json;' 127.0.0.1:9650/ext/keystore
{"jsonrpc":"2.0","result":{"success":true},"id":1}