filter by contact field email in podio restful API

I'm trying to filter entries in my podio app by the email field (using the restful API URLs) that is located in the contact field. When I pull back the data I see that the email is deeply nested in the contact field object like this:

{
      "type": "contact",
      "field_id": 80911192,
      "label": "Personal Information",
      "values": [
        {
          "value": {
            "user_id": null,
            "space_id": 2873853,
            "type": "space",
            "image": null,
            "profile_id": 176014555,
            "org_id": null,
            "phone": [
              "4045559996"
            ],
            "link": "google.com",
            "mail": [
              "[email protected]"
            ],
            "external_id": null,
            "last_seen_on": null,
            "name": "some dude"
          }
        }
      ],
      "config": {
        "settings": {
          "type": "space_contacts",
          "valid_types": [
            "space"
          ]
        },
        "mapping": null,
        "label": "Personal Information"
      },
      "external_id": "personal-information"
    },

how do you filter/search via the URL API by deeply nested sub-fields? is it possible or is that a glaring limitation of podio?

Solution

Sorry, Podio doesn't support deeply nested filtering for space contacts for now. You can still filter at your side :)