Tracestate conveys information about the position/ordering of a request in multiple distributed tracing graphs. It consists of a list of at most 32 ordered Tracestate entries.
A tracestate entry is a key-value pair used to annotate a positional state. It consists of:
|Key||a collection of characters||MUST begin with a lower case letter, can contain lowercase alphanumeric, dashes, asteriks and forward slashes|
|Value||a collection of characters||ONLY printable ASCII characters|