Complex permissions check

[Nikita-Shaked-dev]

Hey Hasura team and community,

Is there a way to achieve the following within permissions:

We have a table:

CREATE TABLE table_a {
     ....
     key_1 TEXT NOT NULL
     key_2 TEXT NOT NULL
     .....
}

We also have an x-hasura-something variable of type jsonb (any better type suggestion or structure for this case?) in the following format:

{"a": ["A", "B", "C"], "b": ["D", "E"]}

the goal is to check that 'table_a.key_1' is a key in 'x-hasura-something', and it`s value contains key_2