Is it possible to set value validation in Postgresql json field?

Question

PostgreSQL

Is it possible to bind keys to json field to other tables?
example field data {parameter1: value1, parameter2: value2} and at the same time, if there is a parameter1 value, then what would it be tied to a specific table and, accordingly, the value could not be "anyhow", but was tied to another table.
Is this done at all in json fields at the level of the DBMS kernel (without manually writing the code of checks bypassing the database)?

Answer 1

No, the foreign key mechanism cannot do that.
Move the value from json to a real table field (at the same time save on space and the cost of processing conditions on this field) and create an FK.