application/graphql vs application/json using axios

graphql-axios.js

let input = { first_name: 'Foo', last_name: 'Bar' };

// application/graphql example
/* eslint-disable no-unused-vars */
let configGraphQL = {
	url: '/graphql',
	method: 'post', 
	headers: { 'Content-Type': 'application/graphql' },
	data: `mutation { user(id: 1, input: ${ JSON.stringify(input) }){ full_name } }`
};

// application/json example
/* eslint-disable no-unused-vars */
let configJson = {
	url: '/graphql',
	method: 'post', 
	data: {
		query: `mutation { user(id: 1, input: ${ JSON.stringify(input) }){ full_name } }`
	}
};

// swap bewteen configGraphQL and configJson (same response)
axios(configJson).then(response => {
	console.log('graphql response:', response.data);
}).catch(err => {
	console.log('graphql error:', err);
});