src/main/resources/securityDefinitions.json

{
  "api_key": {
    "type": "apiKey",
    "name": "api_key",
    "in": "header"
  },
  "Existing JWT token": {
    "type": "oauth2",
    "authorizationUrl": "http://swagger.io/api/oauth/dialog",
    "flow": "implicit",
    "scopes": {
      "scope1": "scope description 1",
      "scope2": "scope description 2"
    }
  }
}