{
  "template_id": "tmpl_abc123def456",
  "renders": [
    {
      "merge_parameters": {
        "first_name": "Jane",
        "last_name": "Doe",
        "account_number": "ACC-9876543",
        "balance": "1250.00"
      },
      "destinations": [
        {
          "name": "s3",
          "data": {
            "bucket": "my-documents-bucket",
            "key": "statements/jane-doe-2026-06.pdf"
          }
        }
      ]
    },
    {
      "merge_parameters": {
        "first_name": "John",
        "last_name": "Smith",
        "account_number": "ACC-1234567",
        "balance": "3400.75"
      },
      "destinations": [
        {
          "name": "s3",
          "data": {
            "bucket": "my-documents-bucket",
            "key": "statements/john-smith-2026-06.pdf"
          }
        }
      ]
    }
  ]
}