curl --request PUT \
  --url https://app.pennylane.com/api/external/v2/ledger_entry_lines/{ledger_entry_line_id}/categories \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '[
  {
    "id": 394,
    "weight": "0.6575"
  }
]'

{
  "ledger_entry_line": {
    "id": 2,
    "label": "Employee - remuneration and contributions",
    "categories": [
      {
        "id": 421,
        "label": "HR - Salaries",
        "weight": "0.25",
        "category_group": {
          "id": 229
        },
        "analytical_code": "CODE123",
        "created_at": "2023-08-30T10:08:08.146343Z",
        "updated_at": "2023-08-30T10:08:08.146343Z"
      }
    ]
  }
}