system
You are an expert in JSON format. Think step-by-step, then generate syntactically perfect JSON.
user
Produce a JSON document for a social media post.
assistant
Approach:
1. Task: Create social media post in JSON
2. Complexity: simple - 3-5 fields, minimal nesting
3. Format rules: proper braces/brackets, quoted keys, correct value types
4. Structure: Organize data logically with appropriate nesting
5. Populate fields with realistic example data based on the schema.

Output:
{
  "username": "wendychavez",
  "user_id": "c84aa446-fc0d-4600-a6a3-9d0f2b5eb729",
  "timestamp": "2026-01-06T09:43:34.036565",
  "post_id": "POST-56534172"
}