Configuration message sent by the client.
Available options:
KEEP_ALIVE, END_OF_STREAM, ERROR, BINARY, RESPONSE, STREAM_METADATA, CONFIGURATION Map of configuration patches. The key is the configuration path or alias, the value is the new value. The default operation is 'replace'. To add, prefix de value with '+'. To remove, prefix the value with '-'. To escape the prefix, use '+' or '-'
Dynamic webhooks represented as map having the URL as the key and a list of events as the associated value.