1. эти эндпоинты изменяют статус места в профиле пользователя и в ответе возвращают место с измененным статусом
save http://api/places/{id}/?checked=false PUT status: false -> saved
check http://api/places/{id}/?checked=true PUT status: saved -> checked
request body: {
  comment: comment,
  stars: stars
}
unsave http://api/places/{id}/?checked=false DELETE status: saved -> false
uncheck http://api/places/{id}/?checked=true DELETE status: checked -> saved
2.
http://api/followings
http://api/followers
response: [
{
  displayName: 'Xavier Lcq',
  id: '10155503355701211',
  photoURL: https://graph.facebook.com/10155503355701211/picture?type=large
},
{
  displayName: 'Xavier Lcq',
  id: '10155503355701211',
  photoURL: https://graph.facebook.com/10155503355701211/picture?type=large
}
]
http://api/follow/id POST
{
  displayName: 'Xavier Lcq',
  id: '10155503355701211',
  photoURL: https://graph.facebook.com/10155503355701211/picture?type=large
}