Returns the version information about the queried node.
Request body:
{ "jsonrpc": "2.0", "method": "getversion", "params": [], "id": 3 }
Response body:
{ "jsonrpc": "2.0", "id": 3, "result": { "port": 0, "nonce": 1546258664, "useragent": "/NEO:2.7.5/" } }