{
  "batch": "batch_2026_02_05_001",
  "items": [
    {
      "id": "item_001",
      "external_id": "ext_abc_123",
      "recipient": "5511999999999",
      "status": "DELIVERED",
      "userId": "user_789"
    },
    {
      "id": "item_002",
      "external_id": "ext_def_456",
      "recipient": "5511888888888",
      "status": "FAILED",
      "userId": "user_456"
    }
  ]
}