curl --location --request POST 'https://www.oschina.net/action/openapi/update_user_relation' \
--header 'Content-Type: application/json' \
--data-raw '{
"access_token": "string",
"friend": 0,
"relation": 0,
"dataType": "string"
}'{
"error": 200,
"relation": 2,
"error_description": "您已经对Ta添加关注"
}