{
    "query": "mutation ($insert: String!) {   m0: Book(insert: $insert) {     uuid     author     book_name   } } ",
    "variables": {
        "insert": "{uuid: \"001fd71f-56d3-462d-9460-7b31e14a866d\", author: \"Моисей\", book_name: \"Библия\"}"
    }
}