curl --request GET \
  --url https://api.{tenant}.getomneo.com/api/v3/allocations

{
  "data": [
    {
      "id": 123,
      "external_id": "<string>",
      "definition_id": 123,
      "definition_type": "<string>",
      "name": "<string>",
      "allocated_at": "<string>",
      "valid_from": "<string>",
      "valid_to": "<string>",
      "value": "<string>",
      "code": "<string>",
      "meta": [
        "<unknown>"
      ],
      "created_at": "<string>",
      "updated_at": "<string>"
    }
  ]
}