Changes to Get API public v1 assets

added the non-success response with the status 403

removed the non-success response with the status 401

added the optional property reason to the response with the 400 status

added the optional property reason to the response with the 422 status

added the optional property reason to the response with the 429 status

added the optional property reason to the response with the 500 status

added the optional property reason to the response with the 504 status