Custom Object records are data that belong to a schema. A parent object (e.g. Contact) may have zero, one, or more Custom Object records.

Property	Description
id	Unique identifier of this record
schemaId	The schema ID this record belongs to
externalId	A custom identifier for this record, and must be unique among other records
fields	Array of fields representing the data for this custom object. Includes all fields defined by the schema. The `id` corresponds to the `fieldId` defined in the schema.
relationships	The ActiveCampaign standard object or Custom Objects this record is related to
createdTimestamp	A timestamp indicating when the record was created
updatedTimestamp	A timestamp indicating when the record was updated