title: What datatype to use in Slick Table definiton for json?
body: <p>A table in my database has a column with the type json. I am wondering, which data type should I use when I define the table in Slick? 
  Currently, for the specific column I use Blob since I found it suggested  <a href="https://stackoverflow.com/questions/43784131/scala-slick-how-to-map-json-to-the-table-column-with-datatype-as-blob">here</a>. 
  I'm interested to know if it is possible to use the json library class provided Play framework (play.libs.json)? If so, how? Do I need implicit mappers? </p>