Create or update a contact. Returns the full contact including its unread conversation count.
Bearer <token>.Pin a specific API version; defaults to the current version.
ISO language code, e.g. "en", "az".
Arbitrary custom contact data (flat key→value object).
Ok
Construct a type with a set of properties K of type T
Missing, invalid or revoked service account token.
The addressed resource does not exist in this project.
Idempotency-Key reuse with a different request body.
Rate limit exceeded — honor the Retry-After header.
Any other error, including validation_failed (400) and internal_error (500).