```ruby
# Load the Rails application.
require File.expand_path('../application', __FILE__)

# Initialize the Rails application.
Rails.application.initialize!
```

Use camelCase in JBuilder output
user
```ruby
# Load the Rails application.
require File.expand_path('../application', __FILE__)

Jbuilder.key_format camelize: :lower

# Initialize the Rails application.
Rails.application.initialize!
```
assistant