get https://api.callhub.io/v1/custom_fields/
Get a list of all custom fields by passing no Path Params. Pass the Path Param for getting particular
custom fields. Each custom field has the following keys
| Key | Value | Description |
|---|---|---|
| id | Auto | Custom Field ID. |
| owner | String | User that is logged in. |
| name | String | Name of custom field. |
| field_type | String | Field type of the custom field. |
| cfmultichoice | List | If field_type is Multi-choice, It is the list of choices. |
| created_date | datetime | Creation date of the custom field. |
| updated_date | datetime | Date at which custom field is modified. |