authorization: ********************curl --location 'https://qa-api.kiolinkapp.com/v1/xc/requests/xcr_qmrILZhkAuXpHbfw/signing/url?document_type=SOW&return_url=https%3A%2F%2Fapp.kio.link%2Fcross-connection%2Fdocusign%2Fxcr_qmrILZhkAuXpHbfw' \
--header 'authorization: <api-key>'{
"url": "string",
"expires_at": "string"
}