curl --request POST \
  --url https://api.gcore.com/iam/reselling/settings/upload \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: multipart/form-data' \
  --form logo=@example-file \
  --form favicon=@example-file

{
  "domain": "<string>",
  "publicSettings": {
    "brandName": "<string>",
    "fromEmail": "jsmith@example.com",
    "showApiDoc": true,
    "websiteLink": "<string>",
    "supportEmail": "<string>",
    "supportPhone": "<string>",
    "agreementLink": "<string>",
    "showStatusPage": "<string>",
    "entryBaseDomain": "<string>",
    "showKnowledgeBase": true,
    "colors": {
      "header": "<string>",
      "primary": "<string>",
      "headerText": "<string>"
    }
  },
  "privateSettings": {
    "mailServer": {
      "tls": true,
      "host": "<string>",
      "port": "<string>",
      "login": "<string>",
      "password": "<string>"
    }
  },
  "reseller": 123,
  "deleted": true
}