How to parse text into json VK responses?

Question

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I uploaded a photo using photos.getMessagesUploadServer
and I can’t save

VK answer:
{"server":855512,"photo":"[{\"markers_restarted\":true,\"photo\":\"c22e3f9d33:x\",\"sizes\":[],\"latitude\" 0, \ "longitude \" 0, \ "kid \": \ "8019ffc4ac348457f7dd9bd97cc1e84c \", \ "sizes2 \": , \ "urls \": [], \ "urls2 \": [\ "FEjN8vQ7a_wsabI-P635mZ0WjqoXkCR1Ei9y0Q / oxyCxBbEB1Y.jpg \", \ "1FDLrWKMZndcCY5Ql2OxJ5JIWCxqlKoNnXvFzg / B42Cwhd1Sp4.jpg \", \ " s1gkkdFgPpzxlzIgnEpyyUQ_D56YlqY9vpS8zQ / JdV-658v-Sg.jpg \ ", \" 1FDLrWKMZndcCY5Ql2OxJ5JIWCxqlKoNnXvFzg / B42Cwhd1Sp4.jpg \ ", \" meeUvQkK0EZBN0PCNa0XEf4kyEWHWdz5G_e4Iw / UrVQOigw9vY.jpg \ ", \" gDUSF6h0Vo57vJObhsSJR951bnSMnvjr_8rsrw / kNc90qwl0Qk.jpg \ ", \"f9DPnzmuWkcNksIyydZwlSEO5z6ijHDvqLtolg/fQAI4j1JnOU.jpg\"],\"peer_id\":499337186}]","hash":"b4ca6a60b4d7e2e8c12ab85d6b8e2f34"}

I don't know how to extract server, photo and hash from the response