Api value of response removing characters

API reponse returns
"@odata.etag": "W/"JzEtVGFzayAgQEBAQEBAQEBAQEBAQEBARCc=""

However if I try to get this data
{{api.data.['@odata.etag'] I get
"@odata.etag": "W/"JzEtVGFzayAgQEBAQEBAQEBAQEBAQEBARCc=""

why is it remove \ and how do I prevent this?