To allow non-hierarchical data to be represented efficiently, all JSON response entities use the document object type. A document allows multiple objects to be defined, named, and referenced. An object is an unordered collection of zero or more name/value pairs, where a name is a string, and a value is a string, number, Boolean, null, object, or array. There are different types of JSON object types with various members and values. These objects have relationships with other objects.