A block with type INPUT_PHONE_NUMBER. Used for phone number input.
Unique identifier for this block.
INPUT_PHONE_NUMBER Groups related blocks together. For standalone blocks, use the block's own uuid. For child blocks (e.g., dropdown options, multiple choice options), use the parent block's uuid so all children share the same groupUuid.
QUESTION Payload for INPUT_PHONE_NUMBER block type. Used for phone number input fields.