Indexing API Migration

{
    "content_type": "file", 
    "source": "document content or file upload",
    "upload_from": "web",
    "user_id": 1
}

{
    "content_type": "file", //Can be one of 'weblink', 'file', 'text'
    "source": "document content or file upload", //Either pass the text content or upload a file
    "tags": "finance,report", //Optional
    "upload_from": "web", //Optional
    "user_id": "1" //Id of the user uploading the document
}

{
    "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
    "statusQueryGetUri": "http://example.com",
    "sendEventPostUri": "http://example.com",
    "terminatePostUri": "http://example.com",
    "rewindPostUri": "http://example.com",
    "purgeHistoryDeleteUri": "http://example.com",
    "restartPostUri": "http://example.com",
    "suspendPostUri": "http://example.com",
    "resumePostUri": "http://example.com"
}

{
    "success": true,
    "message": "Document has been queued for indexing",
    "data": {
        "id": 123,
        "source": "document.pdf",
        "access_url": "https://storage.example.com/document.pdf",
        "step": "pending" //Signifies the state of document in the indexing process. 
    }
}

{
  "success": true,
  "message": "string",
  "data": { ... }
}