Cannot post Array params

params do
  ...
  optional :user_profiles, type: Array, default: [] do
    requires :value, type: String, desc: "Value of the user profile"
  end
end

Using the above gives me curl -X POST --header 'Content-Type: application/x-www-form-urlencoded' --header 'Accept: application/json' -d 'user_profiles[value]=1' 'http://localhost:3000/api/v1/accounts/3/users', and it rejects with user_profiles invalid.

Can someone tell me what am I doing wrong here? Thx!

No source file or test is identified. Start by reproducing the documented POST with the shown Grape params and compare the generated form encoding with the request Grape accepts; done means array parameters are documented with an accepted request format and covered by a regression test.