curl --request POST \
  --url https://sandbox.layerfi.com/v1/businesses/{businessId}/custom-accounts/{customAccountId}/transactions \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "transactions": [
    {
      "external_id": "custom-transaction-id-1234",
      "amount": 123,
      "date": "2023-11-07T05:31:56Z",
      "merchant_name": "My example merchant",
      "merchant_category_code": "4072",
      "description": "Original description",
      "display_description": "Current description to display with details",
      "currency_code": "USD",
      "balance": 123,
      "tags": [
        {
          "key": "department",
          "value": "sales",
          "dimension_display_name": "Department",
          "value_display_name": "Sales Department"
        }
      ],
      "memo": "<string>",
      "metadata": {
        "custom_field": "value",
        "any valid json": "below 1kb",
        "nested": {
          "meaning of life": 42,
          "array": []
        }
      },
      "reference_number": "<string>"
    }
  ]
}
'

{
  "type": "{}"
}