The problem is that the endpoint organizations/{orgid}/networks/ return only one url.
And, the EID in this url can be the eid of wireless.
 
An example : 
https://api.meraki.com/api/v1/organizations/37125365/networks/L_237283
 
 
{
        "id": "L_237283",
        "organizationId": "37125365",
        "name": "LABOTEST",
        "productTypes": [
            "appliance",
            "switch",
            "wireless"
        ],
        "timeZone": "Europe/Paris",
        "tags": []
        ],
        "enrollmentString": null,
        "url": "https://n147.meraki.com/LABOTEST/n/jLYp_l3/manage/usage/list",
        "notes": ""
 }
 
 
 
And, https://api.meraki.com/manage/organization/administered_orgs
 
 
{
    "37125365": {
        "id": "37125365",
        "eid": "daQQac",
        "uid": "54321159657987623231",
        "org_admin_type": "write",
        "name": "OrgNAME",
        "num_networks": 1263,
        "block_meraki_admins": false,
        "licensing_mode": 0,
        "node_groups": {
            "jLYp_l3": {
                "id": "237283",
                "n": "LABOTEST - wireless",
                "t": "LABOTEST",
                "eid": "jLYp_l3",
                "locale_id": "237283",
                "network_type": "wireless"
            },
            "dPQA_d8": {
                "id": "237397",
                "n": "LABOTEST - appliance",
                "t": "LABOTEST",
                "eid": "dPQA_d8",
                "locale_id": "237283",
                "network_type": "appliance"
            },
            "abc_De": {
                "id": "237425",
                "n": "LABOTEST - switch",
                "t": "LABOTEST",
                "eid": "abc_De",
                "locale_id": "237283",
                "network_type": "switch"
            }
        }
    }
}