Changes to Validate NFT metadata

removed the enum value b3 from the path request parameter chain

removed the enum value blast from the path request parameter chain

the response property tokenUri became nullable for the status 200

the error response's property type changed from object to no type for status 200

the metadata response's property type changed from object to no type for status 200

removed the required property error/errorType from the response with the 200 status

removed the required property error/message from the response with the 200 status

removed the required property metadata/attributes from the response with the 200 status

removed the optional property error/statusCode from the response with the 200 status

removed the optional property error/url from the response with the 200 status

removed the optional property metadata/backgroundColor from the response with the 200 status

removed the optional property metadata/description from the response with the 200 status

removed the optional property metadata/externalUrl from the response with the 200 status

removed the optional property metadata/name from the response with the 200 status

removed the optional property metadata/originalAnimationUrl from the response with the 200 status

removed the optional property metadata/originalImageUrl from the response with the 200 status

removed the optional property metadata/processedAnimationUrl from the response with the 200 status

removed the optional property metadata/processedImageUrl from the response with the 200 status

added the new enum value stablechain to the path request parameter chain

added the media type */* for the response with the status 400

added the media type */* for the response with the status 404

added the optional property code to the response with the 401 status

added the optional property code to the response with the 403 status

added the optional property code to the response with the 409 status

added MetadataIngestionError subschema #2 to the error response property anyOf list for the response status 200

added ValidateMetadataDetails subschema #2 to the metadata response property anyOf list for the response status 200