Here is the initial migration you need to create the necessary users table on your own Postgres database instance:
CREATE TABLE users (
id SERIAL PRIMARY KEY,
twitter_user_id VARCHAR(50),
farcaster_username VARCHAR(100),
profile_image_url TEXT,
twitter_access_token TEXT,
twitter_refresh_token TEXT,
twitter_token_expires_at TIMESTAMP,
fid BIGINT,
twitter_oauth_token VARCHAR(255),
twitter_oauth_token_secret VARCHAR(255),
is_online BOOLEAN DEFAULT true,
signer_uuid VARCHAR(255),
twitter_username VARCHAR(100),
display_name VARCHAR(255),
twitter_access_token_secret TEXT,
UNIQUE (twitter_user_id)
);