SUBPLACE Single SignOn, SUBPLACE SSO is a feature for the merchant system to linkup their customer account to SUBPLACE subscriber account. Those customer account that already linkup with SUBPLACE can directly login to SUBPLACE subscriber system without second login.
To achieve the direct login with SSO, you must first obtain the SSO token of the customer by linking up your customer account with SUBPLACE with the mobile number. After getting the SSO token, you can use the token to request the direct login URL from SUBPLACE. By calling the direct login URL, your customer can directly login to SUBPLACE account either to your store page or plan page with key in again their SUBPLACE ID and password.
In short you should do the following:
Calling either of the following API
Subscriber Account Direct API (for trusted merchant with verified mobile number only)
Store the SSO token
Calling Direct Login URL API with the SSO token
Redirect or embed the direct login URL to access SUBPLACE
Understand the respective API to complete the SUBPLACE SSO.