fix attribute serialization

Author: petyosi

.changeset/dull-bananas-act.md

@@ -0,0 +1,6 @@
+---
+"@pydantic/logfire-api": patch
+"logfire": patch
+---
+
+Fix attribute serialization

examples/nextjs-client-side-instrumentation/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "client-side-instrumentation",
+  "name": "@pydantic/nextjs-client-side-instrumentation",
   "version": "0.1.0",
   "private": true,
   "scripts": {

examples/node/index.ts

@@ -5,16 +5,25 @@ logfire.configure({
   serviceName: 'example-node-script',
   serviceVersion: '1.0.0',
   environment: 'staging',
-  diagLogLevel: logfire.DiagLogLevel.INFO,
+  token: 'pylf_v1_eu_fcksvB6FNdWKZ3xGbrG8g8GXHFqPfFXgtRgnZdvV6PCj',
+  diagLogLevel: logfire.DiagLogLevel.DEBUG,
   codeSource: {
     repository: 'https://github.com/pydantic/pydantic',
     revision: 'master',
   },
 })
 
 
-logfire.info('Hello from Node.js', {
-  'attribute-key': 'attribute-value'
+logfire.span('Hello from Node.js, {next_player}', {
+  'attribute-key': 'attribute-value',
+  next_player: '0',
+  arr: [1, 2, 3],
+  something: {
+    value: [1, 2, 3],
+    key: 'value'
+  }
 }, {
   tags: ['example', 'example2']
+}, (span) => {
+  span.end()
 })