Hi everyone, I'm trying to create a knowledge base using Trieve with the following configuration:

{
  "name": "v2",
  "provider": "trieve",
  "searchPlan": {
    "searchType": "semantic",
    "topK": 3,
    "removeStopWords": true,
    "scoreThreshold": 0.7
  },
  "createPlan": {
    "type": "create",
    "chunkPlans": [
      {
        "fileIds": [
          "b89337d17-a0b0-4e6e-9879-test"
        ],
        "websites": [
          "https://jtuyprjjgxbgmtjiykoa.supabase.co/storage/v1/object/public/files/1740635606058-test-5036-4ce8-b29e-9337a0c863d.pdf"
        ],
        "targetSplitsPerChunk": 50,
        "splitDelimiters": [
          ".!?\n"
        ],
        "rebalanceChunks": true
      }
    ]
  }
}

However, I'm unable to create the knowledge base using this setup. so tried the second one

{
  "name": "v2",
  "provider": "trieve",
  "searchPlan": {
    "searchType": "semantic",
    "topK": 3,
    "removeStopWords": true,
    "scoreThreshold": 0.7
  },
  "createPlan": {
    "type": "import",
    "providerId": "test-d39c-4a4a-88cd-test"
  }
}

How am I supposed to upload a large file in Base64? Does Trieve accept file uploads via streaming or FormData? Any guidance or insights would be appreciated. Thanks!