The category of the link. Allowed values: "website", "social", "docs", "other"
A human-readable label for the link. Any UTF-8 string.
URI to the related resource.
Can be a hostname/path (HTTPS assumed) or full URI for other protocols (e.g., ipfs://).
MPTokenMetadataUri object as per the XLS-89 standard. Used within the
urisarray of MPTokenMetadata.