externalSubjectId, normalized contactEmail, and customerType are immutable. An exact retry for the same external subject is idempotent and returns the existing active child with 200; the first creation returns 201. Reusing either reserved identifier with different data returns 409, including after deletion. No corridor grant is accepted.curl --location '/v1/managed-profiles' \
--header 'X-API-Key: <api-key>' \
--header 'Content-Type: application/json' \
--data-raw '{
"contactEmail": "user@example.com",
"customerType": "individual",
"externalSubjectId": "string"
}'{
"managedProfile": {
"contactEmail": "user@example.com",
"createdAt": "2019-08-24T14:15:22.123Z",
"creationSource": "manager",
"customerType": "individual",
"deletedAt": "2019-08-24T14:15:22.123Z",
"externalSubjectId": "string",
"profileId": "faebe71b-2bf8-4bdb-9b67-258e4d6aa00a",
"status": "active",
"updatedAt": "2019-08-24T14:15:22.123Z"
}
}