Returns a single contact by ID.
The contact's _id.
Contact data.
MongoDB ObjectId of the contact.
Computed display name (first + last, or company name for org records).
Two-letter initials derived from first and last name.
CDN thumbnail URL for the contact's photo, or null if none.
Company name — populated when isCompany is true.
Custom fields for this contact, keyed by field ID. Each entry is enriched with the
field definition from the contact's type. Fields defined for the type but not yet set
on the contact are included with value: null.