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