Replace "your_password" in example with real value from wallet daemon. Password is specified on command-line of wallet daemon, it is not returned by any API method for security reasons.
# With a passwordcurl -X POST http://ip_address:port/json_rpc -H 'Content-Type: application/json-rpc' -d '{"jsonrpc": "2.0", "method": "store", "password": "your_password", "params": {}, "id": "1"}'
# Without a passwordcurl -X POST http://ip_address:port/json_rpc -H 'Content-Type: application/json-rpc' -d '{"jsonrpc": "2.0", "method": "store", "password": "your_password", "params": {}, "id": "1"}'