restangular_nested.js

var allAccounts = Restangular.all("accounts");

// GET /accounts
allAccounts.getList().then(function(accounts) {
  // Get /accounts/123/users considering 123 is the ID of accounts[0]
  accounts[0].getList("users").then(function(users) {
    // POST /accounts/123/users
    users.post({name: "Gonto"})
    var oneUser = users[0];
    oneUser.name = "Hey jude";
    // PUT /accounts/123/users/4556
    oneUser.put()
  })
})