curl -X POST \
  https://pushsms.ru/api/tmp/instances \
  -H 'Authorization: {api_key}' \
  -H 'content-type: application/json' \
  -d '{
    "instance" :  {
    "phone" : "89123456789",
    "email" : "email@gmail.com",
    "password" : "qweraa23456",
    "dispatch_routing" : ["whatsapp", "tdlib"],
    "external_id" : "123456"
}
}'

{
    "instance": {
        "id": 3,
        "customer_id": 312,
        "token": "eJhbGiJIUzI1NiJ9.eyJjdXN0b21lcl9pZCI6MzE1LCJkYXRldGltZSI6MTY1OTcwNzU5M30.yTENgW_CcGaSXILgGw_163wgWWb9ih4mSWVld8aFMAc",
        "idempotency_key": "9nXf9HWj",
         "external_id" : "123456"
    },
    "meta": {
        "status": "success",
        "code": 200
    }
}

{
    "meta": {
        "status": "fail",
        "code": 422,
        "message": "Unprocessable entity",
        "errors": {
            "email": [
                "уже существует"
            ],
            "phone": [
                "уже существует"
            ]
        }
    }
}