Bearer Authorization denied in api using cURL - php

Question

I want to make a simple post request to an API server. I know, there are lot of information about cURL in web, but I can't figure out, why am I getting:
[message] => Authorization has been denied for this request.
So the API uses standard bearer token(in the header Authorization: Bearer {tokenID})
my php code:
$body = array(
"id" => $uuid,
"userAccountId" => $userAccountId,
"email" => $email,
"first_name" => $first_name,
"last_name" => $last_name,
"phone" => $phone,
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER, http_build_query(array(
'Authorization' => $token,
)));
curl_setopt($ch, CURLOPT_URL, $myurl);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($body));
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
$result = curl_exec($ch);
curl_close($ch);
$result = json_decode($result);
The most interesting and weird thing is, that, when I send a Post request to the same url with the same body and the same header(same token) using postman, it works, however it doesn't work with php cURL. Also I tried with https://www.codepunker.com/tools/http-requests and got the same Authorization error. Has anyone any ide what could it be ?

Answer 1

I found the issue: I should have used json_encode($body) instead http_build_query($body) and the header in the following way:
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Authorization: Bearer .....',
'accept: application/json',
'content-type: application/json',
));