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A block with type HEADING_3. Used for small headings.

uuid
string<uuid>
required

Unique identifier for this block.

type
enum<string>
required
Available options:
HEADING_3
groupUuid
string<uuid>
required

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.

groupType
enum<string>
required
Available options:
HEADING_3
payload
Heading3Payload · object
required

Payload for HEADING_3 block type. Used for H3 headings.