party-attribute-update-intent:create.attribute_etag, the update applies only if the attribute has not changed since it was read; without it, the update applies to whatever the attribute holds.curl --location '/party-attribute-update-intents' \
--header 'x-fomo-api-version: v20260326' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{
"party_attribute_id": "0199bcf0-a5b8-7958-887f-61e0afbe2ede",
"attribute_etag": "\"AZm0pm8ufDGaO10ujxxKEAAAAAAAAAAB\"",
"value": "1990-01-31",
"expire_time": "2026-10-05T03:12:45.123Z"
}'{
"id": "0199ba56-1452-770c-8e6b-3bebd1dd012b",
"create_time": "2026-10-05T03:12:45.123Z",
"update_time": "2026-10-05T03:12:45.123Z",
"token": "AZm0pm8ufDGaO10ujxxKEA",
"etag": "\"AZm0pm8ufDGaO10ujxxKEAAAAAAAAAAB\"",
"life_cycle": "pending-confirmation",
"result": "pending",
"fail_reason": null,
"customer_id": "0199b1e3-8d67-7dbe-88f4-7d244e0ba9ff",
"party_id": "0199b940-1c40-720f-8068-5d8d3f10afa2",
"party_attribute_id": "0199bcf0-a5b8-7958-887f-61e0afbe2ede",
"value": "1990-01-31",
"expire_time": null,
"confirm_time": null,
"complete_time": null
}