paypalv1.1
.username:password
Authorization: Basic *****************
paypalv1.1
.curl --location --request GET 'https://api-m.sandbox.paypal.com/v1/identity/oauth2/userinfo?schema=paypalv1.1' \
--header 'Authorization: Basic Og=='
{
"user_id": "https://www.paypal.com/webapps/auth/identity/user/JkswKSOc6jJ3wtm9cmnmqqvIJJ-MF46WF707PEYTcEs",
"sub": "https://www.paypal.com/webapps/auth/identity/user/JkswKSOc6jJ3wtm9cmnmqqvIJJ-MF46WF707PEYTcEs"
}