| Name | Type | Description | Notes |
|---|---|---|---|
| name | string | The segment's unique descriptive name. | |
| segment_criteria | string | The <code>segment_criteria</code> specifies the contact data that Constant Contact uses to evaluate and identify contacts that meet your criteria. The <code>segment_criteria</code> must be formatted as single-string escaped JSON. The top-level <code>group</code> <code>type</code> must be <code>add</code>. |