curl --request POST \
  --url https://api.dooki.com.br/v2/{alias}/catalog/customizations \
  --header 'Content-Type: application/json' \
  --header 'User-Secret-Key: <api-key>' \
  --header 'User-Token: <api-key>' \
  --data '{
  "name": "<string>",
  "price": 123,
  "description": "<string>",
  "type": "<string>",
  "required": true,
  "max_chars": 123,
  "values": [
    "<string>"
  ]
}'

{
  "id": 123,
  "name": "Primeira Letra",
  "price": 123,
  "description": "Descrição",
  "type": "select",
  "required": true,
  "allowed_values": "<string>",
  "max_chars": 1,
  "products_ids": [
    123
  ],
  "values": "['A', 'B', 'C', 'D']"
}