Metadata

Some updatable objects might have a metadata parameter. You can use this parameter to attach key-value data to these objects

You can specify up to 50 keys, with key names up to 50 utf-8 characters long and values up to 500 utf-8 characters long.

Metadata is useful for storing additional, structured information on an object. As an example, you could store your corresponding unique identifier from your system as metadata for the object.

Do not store any sensitive information as metadata.