curl --request POST \
  --url https://api.kejue.co/api/v1/campaigns \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "name": "<string>",
  "description": "<string>",
  "persona_id": "<string>",
  "voice_config_id": "<string>",
  "call_settings": {
    "allowed_days": [
      0,
      1,
      2,
      3,
      4
    ],
    "auto_retry": true,
    "call_end_hour": 17,
    "call_start_hour": 9,
    "phone_assignment_mode": "local",
    "retry_schedule": [
      60,
      240
    ],
    "scoring_criteria": "Score 0-100 based on buying intent",
    "structured_data_schema": [
      {
        "description": "Stated budget range",
        "key": "budget"
      },
      {
        "description": "Decision timeline",
        "key": "timeline"
      }
    ],
    "tags": [
      {
        "description": "Contact expressed buying interest",
        "name": "Interested"
      },
      {
        "description": "Contact requested a follow-up call",
        "name": "Follow-up"
      }
    ]
  },
  "metadata": {},
  "contact_ids": [
    "<string>"
  ],
  "priority": 50,
  "scheduled_start_at": "<string>",
  "auto_start": false
}
'

{
  "id": "<string>",
  "name": "<string>",
  "status": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "persona_id": "<string>",
  "contacts_added": 123,
  "scheduled_start_at": "<string>"
}