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                            [0] => HHLLDDzBdlMwioZcTB4-nvJtUrO7AynDFqPjaZ7ub1zX24LP_gNIeQ==
                        )

                    [X-CF-Upstream-Source] => Array
                        (
                            [0] => default-origin
                        )

                )

            [headerNames:GuzzleHttp\Psr7\Response:private] => Array
                (
                    [content-length] => Content-Length
                    [connection] => Connection
                    [vary] => vary
                    [cache-control] => cache-control
                    [pragma] => pragma
                    [expires] => expires
                    [x-content-type-options] => x-content-type-options
                    [x-frame-options] => x-frame-options
                    [x-xss-protection] => x-xss-protection
                    [referrer-policy] => referrer-policy
                    [x-envoy-upstream-service-time] => x-envoy-upstream-service-time
                    [date] => date
                    [server] => server
                    [x-cache] => X-Cache
                    [via] => Via
                    [x-amz-cf-pop] => X-Amz-Cf-Pop
                    [x-amz-cf-id] => X-Amz-Cf-Id
                    [x-cf-upstream-source] => X-CF-Upstream-Source
                )

            [protocol:GuzzleHttp\Psr7\Response:private] => 1.1
            [stream:GuzzleHttp\Psr7\Response:private] => GuzzleHttp\Psr7\Stream Object
                (
                    [stream:GuzzleHttp\Psr7\Stream:private] => Resource id #65
                    [size:GuzzleHttp\Psr7\Stream:private] => 0
                    [seekable:GuzzleHttp\Psr7\Stream:private] => 1
                    [readable:GuzzleHttp\Psr7\Stream:private] => 1
                    [writable:GuzzleHttp\Psr7\Stream:private] => 1
                    [uri:GuzzleHttp\Psr7\Stream:private] => php://temp
                    [customMetadata:GuzzleHttp\Psr7\Stream:private] => Array
                        (
                        )

                )

        )

    [handlerContext:GuzzleHttp\Exception\RequestException:private] => Array
        (
        )

)
Subscription failed: Client error: `POST https://api.attentivemobile.com/v1/attributes/custom` resulted in a `401 Unauthorized` response