project = object.project
json.project do 
  json.id project.id
  json.identifier project.identifier
  json.name project.name
  json.description project.description
  json.is_public project.is_public
  json.owner do 
    json.partial! "/users/user_simple", locals: {user: project.owner}
  end
end
json.user do 
  json.partial! "/users/user_simple", locals: {user: object.user}
end
json.id object.id
json.status object.status
json.role object.role
json.created_at format_time(object.created_at)
json.time_ago time_from_now(object.created_at)