@schedutron Can you please share your request headers here ? Are you requesting token from auth/session and then using it in request header ?
/v1/users POST requiresHeaders
Content-Type: application/vnd.api+json
Authorization: JWT <Auth Key>
Body
{
"data": {
"attributes": {
"email": "example@example.com",
"password": "password",
"avatar_url": "http://example.com/example.png",
"first-name": "John",
"last-name": "Doe",
"details": "example",
"contact": "example",
"facebook-url": "http://facebook.com/facebook",
"twitter-url": "http://twitter.com/twitter",
"instagram-url": "http://instagram.com/instagram",
"google-plus-url": "http://plus.google.com/plus.google",
"original-image-url": "https://cdn.pixabay.com/photo/2013/11/23/16/25/birds-216412_1280.jpg"
},
"type": "user"
}
}