text: create table sticker_packs (
      id int not null,
      access_salt varchar(255) not null,
      owner_user_id int not null,
      is_default boolean not null default false,
      primary key(id)
  );
  
  create table own_sticker_packs (
      user_id int not null,
      pack_id int not null,
      primary key(user_id, pack_id)
  );
  
  create table sticker_data (
      id int not null,
      pack_id int not null,
      emoji varchar(16),
      image_128_file_id bigint not null,
      image_128_file_hash bigint not null,
      image_128_file_size bigint not null,
      image_256_file_id bigint,
      image_256_file_hash bigint,
      image_256_file_size bigint,
      image_512_file_id bigint,
      image_512_file_hash bigint,
      image_512_file_size bigint,
      primary key(id, pack_id)
  );