Create a balance card

Creates a new balance card linked to an existing sub-account.

Authentication: x-api-key header required

Required Role: DEVELOPER, PRODUCTION

Implementation Details:

• The wallet_id and program_id are automatically retrieved from the sub-account
• The sub-account must exist and be accessible by the user
• The vendor_id is automatically retrieved from the program configuration

External API Call: Makes a POST request to /cards/balance?vendorId={vendor_id} with the following payload:

{
  "card_name": "provided card_name",
  "sub_account_id": "provided sub_account_id",
  "email": "provided email",
  "mobile": "provided mobile",
  "wallet_id": "retrieved from sub-account",
  "program_id": "retrieved from sub-account"
}