curl --location --request POST 'https://analytics.googleapis.com/analytics/v3/management/clientId:hashClientId' \
--header 'Content-Type: application/json' \
--data-raw '{
"clientId": "string",
"kind": "analytics#hashClientIdRequest",
"webPropertyId": "string"
}'
{
"clientId": "string",
"hashedClientId": "string",
"kind": "analytics#hashClientIdResponse",
"webPropertyId": "string"
}