No, JSON is not needed here.

For this simple blogging platform, let's start simple, basic
HTML forms are enough.

dudeswave/src/dudeswave_app.erl

@@ -37,7 +37,7 @@ start(_Type, StartArgs) ->
 
 	Dispatch = cowboy_router:compile([
 	    {'_', [
-	        {"/user", dudeswave_user_handler, #{bucket => ?USERSBUCKET}},
+	        {"/user/new", dudeswave_user_handler, #{bucket => ?USERSBUCKET}},
 	        {"/", dudeswave_handler, #{bucket => ?APPBUCKET}}
 	    ]}
 	]),

dudeswave/src/dudeswave_user_handler.erl

@@ -45,10 +45,10 @@ allowed_methods(Req, State) ->
 	{[<<"PUT">>], Req, State}.
 
 content_types_accepted(Req, State) ->
-	{[{{ <<"application">>, <<"json">>, '*'}, create_user}], Req, State}.
+	{[{<<"application/x-www-form-urlencoded">>, create_user}], Req, State}.
 
 known_methods(Req, State) ->
-	{[<<"PUT">>], Req, State}.
+	{[<<"POST">>], Req, State}.
 
 resource_exists(Req, State) ->
 	{ok, Bucket} = maps:find(bucket, State),