{
  "content": [
    {
      "label": "retailername",
      "value": null
    },
    {
      "label": "sold_to_party",
      "value": null
    },
    {
      "label": "purchase_date",
      "value": []
    },
    {
      "label": "imei_number",
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    },
    {
      "label": "invoice_no",
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  "doc_type": "sbt_document",
  "end_page": 1,
  "start_page": 1
}