message ListChecksum {
  required int32 version = 1;
  optional bytes sha1 = 4;
}
message DownloadFormat {
  enum Codec {
    CODEC_UNKNOWN = 0;
    OGG_VORBIS = 1;
    FLAC = 2;
    MPEG_1_LAYER_3 = 3;
  }
  required Codec codec = 1;
}
enum ListAttributeKind {
  LIST_UNKNOWN = 0;
  LIST_NAME = 1;
  LIST_DESCRIPTION = 2;
  LIST_PICTURE = 3;
  LIST_COLLABORATIVE = 4;
  LIST_PL3_VERSION = 5;
  LIST_DELETED_BY_OWNER = 6;
  LIST_RESTRICTED_COLLABORATIVE = 7;
}
message ListAttributes {
  optional string name = 1;
  optional string description = 2;
  optional bytes picture = 3;
  optional bool collaborative = 4;
  optional string pl3_version = 5;
  optional bool deleted_by_owner = 6;
  optional bool restricted_collaborative = 7;
}
enum ItemAttributeKind {
  ITEM_UNKNOWN = 0;
  ITEM_ADDED_BY = 1;
  ITEM_TIMESTAMP = 2;
  ITEM_MESSAGE = 3;
  ITEM_SEEN = 4;
  ITEM_DOWNLOAD_COUNT = 5;
  ITEM_DOWNLOAD_FORMAT = 6;
  ITEM_SEVENDIGITAL_ID = 7;
  ITEM_SEVENDIGITAL_LEFT = 8;
  ITEM_SEEN_AT = 9;
}
message ItemAttributes {
  optional string added_by = 1;
  optional string message = 3;
  optional bool seen = 4;
  optional DownloadFormat download_format = 6;
  optional string sevendigital_id = 7;
}
message StringAttribute {
  required string key = 1;
  required string value = 2;
}
message StringAttributes {
  repeated StringAttribute attribute = 1;
}