title: MultiJson::LoadError unexpected token
body: <p>I'm trying to follow this tutorial for creating token authentication using Devise:</p>
  
  <p><a href="http://www.strukturedkaos.com/2011/09/19/soup-to-nuts-token-authentication-for-android-using-rails-3-devise/" rel="noreferrer">http://www.strukturedkaos.com/2011/09/19/soup-to-nuts-token-authentication-for-android-using-rails-3-devise/</a></p>
  
  <p>However, when I try to confirm that the sessions_controller outlined in the tutorial is working correctly, I get the error:</p>
  
  <pre><code>MultiJson::LoadError (795: unexpected token at '{'user':{'username':'test', 'password':'password'}}'):
    json (1.8.0) lib/json/common.rb:155:in `parse'
    json (1.8.0) lib/json/common.rb:155:in `parse'
    multi_json (1.7.7) lib/multi_json/adapters/json_common.rb:16:in `load'
    multi_json (1.7.7) lib/multi_json/adapter.rb:19:in `load'
    multi_json (1.7.7) lib/multi_json.rb:130:in `load'
    activesupport (3.2.8) lib/active_support/json/decoding.rb:15:in `decode'
    actionpack (3.2.8) lib/action_dispatch/middleware/params_parser.rb:47:in `parse_formatted_parameters'
    actionpack (3.2.8) lib/action_dispatch/middleware/params_parser.rb:17:in `call'
    actionpack (3.2.8) lib/action_dispatch/middleware/flash.rb:242:in `call'
    rack (1.4.5) lib/rack/session/abstract/id.rb:210:in `context'
    rack (1.4.5) lib/rack/session/abstract/id.rb:205:in `call'
    actionpack (3.2.8) lib/action_dispatch/middleware/cookies.rb:339:in `call'
    activerecord (3.2.8) lib/active_record/query_cache.rb:64:in `call'
    activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_pool.rb:473:in `call'
    actionpack (3.2.8) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
    activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `_run__4387220243864305605__call__1717915382536916025__callbacks'
    activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `__run_callback'
    activesupport (3.2.8) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
    activesupport (3.2.8) lib/active_support/callbacks.rb:81:in `run_callbacks'
    actionpack (3.2.8) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
    actionpack (3.2.8) lib/action_dispatch/middleware/reloader.rb:65:in `call'
    actionpack (3.2.8) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
    actionpack (3.2.8) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
    actionpack (3.2.8) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
    railties (3.2.8) lib/rails/rack/logger.rb:26:in `call_app'
    railties (3.2.8) lib/rails/rack/logger.rb:16:in `call'
    actionpack (3.2.8) lib/action_dispatch/middleware/request_id.rb:22:in `call'
    rack (1.4.5) lib/rack/methodoverride.rb:21:in `call'
    rack (1.4.5) lib/rack/runtime.rb:17:in `call'
    activesupport (3.2.8) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
    rack (1.4.5) lib/rack/lock.rb:15:in `call'
    actionpack (3.2.8) lib/action_dispatch/middleware/static.rb:62:in `call'
    railties (3.2.8) lib/rails/engine.rb:479:in `call'
    railties (3.2.8) lib/rails/application.rb:223:in `call'
    rack (1.4.5) lib/rack/content_length.rb:14:in `call'
    railties (3.2.8) lib/rails/rack/log_tailer.rb:17:in `call'
    thin (1.5.1) lib/thin/connection.rb:81:in `block in pre_process'
    thin (1.5.1) lib/thin/connection.rb:79:in `catch'
    thin (1.5.1) lib/thin/connection.rb:79:in `pre_process'
    thin (1.5.1) lib/thin/connection.rb:54:in `process'
    thin (1.5.1) lib/thin/connection.rb:39:in `receive_data'
    eventmachine (1.0.3) lib/eventmachine.rb:187:in `run_machine'
    eventmachine (1.0.3) lib/eventmachine.rb:187:in `run'
    thin (1.5.1) lib/thin/backends/base.rb:63:in `start'
    thin (1.5.1) lib/thin/server.rb:159:in `start'
    rack (1.4.5) lib/rack/handler/thin.rb:13:in `run'
    rack (1.4.5) lib/rack/server.rb:268:in `start'
    railties (3.2.8) lib/rails/commands/server.rb:70:in `start'
    railties (3.2.8) lib/rails/commands.rb:55:in `block in &lt;top (required)&gt;'
    railties (3.2.8) lib/rails/commands.rb:50:in `tap'
    railties (3.2.8) lib/rails/commands.rb:50:in `&lt;top (required)&gt;'
    script/rails:6:in `require'
    script/rails:6:in `&lt;main&gt;'
  </code></pre>
  
  <p>This is the command that I test with:</p>
  
  <pre><code>curl -v -H 'Content-Type: application/json' -H 'Accept: application/json' -X POST http://localhost:3000/sessions -d "{'user':{'username':'test', 'password':'password'}}"
  </code></pre>
  
  <p>What am I doing wrong?</p>