{
    "user1": [{
        "idm": [{
            "name": "Jane Smith",
            "email": "user1@example.com"
        }],
        "em": [{
            "name": "Jane Smith",
            "email": "user1@example.com"
        }],
        "fm": [{
            "name": "Jane Smith",
            "email": "user1@example.com"
        }]
    }],
    "user2": [{
        "idm": [{
            "name": "John Smith",
            "email": "user2@example.com"
        }],
        "em": [{
            "name": "John Smith",
            "email": "user2@example.com"
        }],
        "fm": [{
            "name": "John Smith",
            "email": "user2@example.com"
        }]
    }]
}

userData = {};
user = 'user1'

this.idm['name'] = name;
this.idm['email'] = email;
this.userData[user].push(this.idm);

this.em['name'] = name;
this.em['email'] = email;
this.userData[user].push(this.em);

this.fm['name'] = name;
this.fm['email'] = email;
this.userData[user].push(this.fm);