shell> curl -X POST --data-binary @- --dump - http://localhost:8529/_api/database
{"name":"mydb","users":[{"username":"admin","passwd":"secret","active":true},{"username":"tester","passwd":"test001","active":false}]}

HTTP/1.1 201 Created
content-type: application/json; charset=utf-8

{ 
  "result" : true, 
  "error" : false, 
  "code" : 201 
}