how to use curl to create an customer

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Hi all:

I want to use cURL to send our request to Google Ads API, and I have 2 querstions. 

 looking forward for your answers.

1. What is the difference between the CustomerService and CustomerFeedService.

2. How can I make a CURL to create an customer? The product documentation on :  https://developers.google.com/google-ads/api/docs/account-management/create-account  tells us to use CreateCustomerClient method on the CustomerService rather than a "mutate" method, but we have to uses CURL to complete our mission, because our development language is C++, not access to the client libraries(which include Java,C#,PHP,Python,Ruby,Perl).

here's my code example：

 curl --request POST \

--header "Content-Type: application/json"  \

--header "Authorization: Bearer XXX"  \

--header "developer-token: kxILp-C_Bvxx" \

     --data @create_budget.json \

     https://googleads.googleapis.com/v6/customers/1234567890/campaignBudgets:mutate

 

create_budget.json 

{

  operations:

  [

{

  create:

  {

name: "new budget 234",

amount_micros: "60000000"

  }

}

  ],

  "validate_only":"true"

}

We are expecting a reply, thank tou very much!

[陈以]

Is there anybody who can answer me? 
Expecting your allowance.