| attestation | No | How the submitter is connected to the submitted evidence. | |
| entity_slug | No | Exact Loa entity slug if entity_page_id is not available. | |
| entity_type | No | Entity kind for the requested update; use unknown only when it cannot be determined. | unknown |
| price_items | No | Optional structured price rows proposed for Loa review. | |
| source_urls | No | Optional public URLs reviewers can use to verify the submitted change. | |
| request_type | Yes | Type of reviewed change being requested. | |
| source_notes | No | Short verification notes, source context, or callback instructions. | |
| entity_page_id | No | Loa entity_pages.id for the provider or hospital. | |
| submitter_name | No | Name of the person submitting the request. | |
| submitter_role | No | Submitter role, such as billing manager or authorized agent. | |
| idempotency_key | No | Optional stable retry key. Loa derives one from the payload if omitted. | |
| submitter_email | Yes | Work email for the submitting representative. | |
| submitter_phone | No | Optional callback phone number for reviewer follow-up. | |
| proposed_changes | No | Structured profile or listing fields proposed for Loa review. | |
| uploaded_file_url | No | Optional public URL for an uploaded evidence file. | |
| submitter_organization | No | Provider, hospital, or agent organization represented by the submitter. | |