# User account holder **POST /users/{user_id}/custody_account_holders** User account holder ## Servers ## Parameters ### Path parameters - **user_id** (string) User id ## Responses ### 201 Custody account holder created #### Body: (object) - **id** (string) - **internal_id** (string) - **name** (string) - **email** (string) - **kyc_data** (object) - **idnow_id** (string) - **accounts** (array[object]) ### 400 Server cannot or will not process the request ### 401 Authorization information is missing or invalid. [Powered by Bump.sh](https://bump.sh)