how to get X-Requested-By in scim oim

Hello

I want to lock a user by SCIM OIM 12c using the following url and headers which got this link Developing and Customizing Applications for Oracle Identity Governance:

Operation and URI: PATCHhttp://HOST_NAME:PORT/iam/governance/scim/v1/Users/356

Header:

Content-Type: application/scim+json

Authorization: Bearer h480djs93hd8

X-Requested-By: <random_value>

Body:

{

 "schemas": ["urn:ietf:params:scim:api:messages:2.0:PatchOp"],

 "Operations": [

 {

  "op":"replace",

  "path":"urn:ietf:params:scim:schemas:extension:oracle:2.0:IDM:User:locked",

  "value" :

   {

    "value" : 1,

    "duration" : 3600

   }

 }

 ]

}

My question is: How to get the X-Requested-By header?

Regards