curl --request POST \
  --url https://sandbox.layerfi.com/v1/businesses/{businessId}/bank-transactions/bulk-categorize \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "transactions": [
    {
      "transaction_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "categorization": {
        "category": {
          "type": "AccountId",
          "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
        }
      }
    }
  ]
}
'

{
  "results": [
    {
      "transaction_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "success": true,
      "error": "<string>"
    }
  ]
}