assignee object with three fields: the user identifier, name and email — a bare identifier in the body is not accepted. The name provided is stored as a frozen snapshot on the card at call time: it is not re-resolved from the user's account on later reads, so it may diverge from the account's current name if it is renamed afterwards. To correct the name displayed on an existing card, simply resend this call with the desired name, with no need to change the user's account.curl --location --request PATCH '/v1/flows//cards//assignee' \
--header 'Content-Type: application/json' \
--data '{
"assignee": {
"userId": "string",
"userName": "string",
"userEmail": "string"
}
}'{
"userId": "string",
"userName": "string",
"userEmail": "string"
}