CREATE TABLE test_case (
  id int NOT NULL AUTO_INCREMENT,
  people json DEFAULT NULL,
  PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci

@Entity
public class TestCase {
  @Id  @GeneratedValue(strategy = GenerationType.IDENTITY)
  public long id;
  
  @JdbcTypeCode(SqlTypes.JSON)
  public List<Person> people;
  
  public class Person {
    public String firstName;
    public String lastName;
  }
}