How can I use Guzzle to send a POST request in JSON?

How can I use Guzzle to send a POST request in JSON?

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Guzzle 6: no more json() method for responses

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Guzzlehttp - How get the body of a response from Guzzle 6?

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Handle Guzzle exception and get HTTP body

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Catching exceptions from Guzzle

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How do I do HTTP basic authentication using Guzzle?

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How to ignore invalid SSL certificate errors in Guzzle 5

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PHP - Why Use Guzzle Instead of cURL?

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How to set default header in Guzzle?

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How to read the response effective URL in Guzzle ~6.0

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Adding Query string params to a Guzzle GET request?

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Guzzle Curl Error 60 SSL unable to get local issuer

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Guzzle HTTP - add Authorization header directly into request

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How can I send Cookies with Guzzlehttp/guzzle 6?

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Guzzle returns cURL error 3: <url> malformed

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