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    4,
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  "text_body": [
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    4,
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  "attachments": [],
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          "name": "content_type",
          "value": {
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              "c_type": "multipart",
              "c_subtype": "mixed",
              "attributes": [
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                ]
              ]
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          },
          "offset_field": 0,
          "offset_start": 13,
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        {
          "name": "mime_version",
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          "offset_field": 45,
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      ],
      "is_encoding_problem": false,
      "body": {
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      "offset_body": 66,
      "offset_end": 642
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    {
      "headers": [
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          "name": "content_transfer_encoding",
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          "offset_end": 106
        },
        {
          "name": "content_type",
          "value": {
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                ]
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          },
          "offset_field": 106,
          "offset_start": 119,
          "offset_end": 150
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      ],
      "is_encoding_problem": false,
      "body": {
        "Text": "Test message਍"
      },
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      "offset_body": 152,
      "offset_end": 179
    },
    {
      "headers": [
        {
          "name": "content_transfer_encoding",
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            "Text": "base64"
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          "offset_end": 221
        },
        {
          "name": "content_type",
          "value": {
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          "offset_field": 221,
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      ],
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        "Text": "Test message\n"
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      "offset_end": 305
    },
    {
      "headers": [
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          "name": "content_transfer_encoding",
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          "offset_end": 347
        },
        {
          "name": "content_type",
          "value": {
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              "c_subtype": "plain",
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                ]
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          "offset_field": 347,
          "offset_start": 360,
          "offset_end": 391
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      ],
      "is_encoding_problem": false,
      "body": {
        "Text": "Test message\n"
      },
      "offset_header": 312,
      "offset_body": 393,
      "offset_end": 431
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    {
      "headers": [
        {
          "name": "content_transfer_encoding",
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          "offset_start": 464,
          "offset_end": 473
        },
        {
          "name": "content_type",
          "value": {
            "ContentType": {
              "c_type": "text",
              "c_subtype": "plain",
              "attributes": [
                [
                  "charset",
                  "EUC-JP"
                ]
              ]
            }
          },
          "offset_field": 473,
          "offset_start": 486,
          "offset_end": 515
        }
      ],
      "is_encoding_problem": false,
      "body": {
        "Text": "『世界人権宣言』"
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      "offset_header": 438,
      "offset_body": 517,
      "offset_end": 543
    },
    {
      "headers": [
        {
          "name": "content_transfer_encoding",
          "value": {
            "Text": "binary"
          },
          "offset_field": 550,
          "offset_start": 576,
          "offset_end": 585
        },
        {
          "name": "content_type",
          "value": {
            "ContentType": {
              "c_type": "text",
              "c_subtype": "plain",
              "attributes": [
                [
                  "charset",
                  "UTF-8"
                ]
              ]
            }
          },
          "offset_field": 585,
          "offset_start": 598,
          "offset_end": 626
        }
      ],
      "is_encoding_problem": false,
      "body": {
        "Text": "invalid"
      },
      "offset_header": 550,
      "offset_body": 628,
      "offset_end": 635
    }
  ]
}