{
    "fields": {
        "account": {
            "type": "link",
            "readOnly": true,
            "customizationDisabled": true
        },
        "parent": {
            "entityList": ["Account", "Lead", "Contact", "Opportunity", "Case"]
        },
        "tasks": {
            "type": "linkMultiple",
            "readOnly": true,
            "columns": {
                "status": "status"
            },
            "view": "crm:views/task/fields/tasks",
            "customizationDefaultDisabled": true
        }
    },
    "links": {
        "account": {
            "type": "belongsTo",
            "entity": "Account"
        },
        "tasks": {
            "type": "hasMany",
            "entity": "Task",
            "foreign": "email"
        }
    }
}