Cannot upload blob through the API using form data

[bixelbg]

// There is a fixture folder that contains testQA.png file in root

//Code block that i'm using in my Cypress.Commands.add() that cant get to send the request with the form data

cy.fixture("testQA.png").then((image) => {
  let formData = new FormData();
  const fileName = "testQA.png";
  const blob = Cypress.Blob.base64StringToBlob(image, "image/png");
  formData.append("file", blob, fileName);

  const uploadImage = {
    method: "POST",
    headers: {
      // "content-type": "multipart/form-data", (added automatically by cypress)
      Authorization: `Bearer ${admin_token}`,
    },
    url: "www.APIendpoint.example/upload/image",
    body: blob,
  };

  cy.request(uploadImage).then((response) => {
    const bodyString = Cypress.Blob.arrayBufferToBinaryString(response.body);
  // I'm using body string in another request's payload
    expect(response.status).to.eq(200);
  });
});

//This is how postman generated examples of the request
//This request works fine in postman, image is uploaded as expected
//? Fetch request (generated by POSTMAN)
const myHeaders = new Headers();
myHeaders.append(
  "Content-Type",
  "multipart/form-data; boundary=---------------------------86479539912571167073517038983"
);
myHeaders.append("Authorization", `Bearer ${admin_token}`);

var formdata = new FormData();
formdata.append("file", fileInput.files[0], "/C:/Users/User/Desktop/images/testQA.png");

const requestOptions = {
  method: "POST",
  headers: myHeaders,
  body: formdata,
  redirect: "follow",
};

fetch("www.APIendpoint.example/upload/image", requestOptions)
  .then((response) => response.text())
  .then((result) => console.log(result))
  .catch((error) => console.log("error", error));

//? CURL request (generated by POSTMAN)
cy.exec(
  `curl --location --request POST 'www.APIendpoint.example/upload/image' --header 'Content-Type: multipart/form-data; boundary=---------------------------86479539912571167073517038983' --header 'Authorization: Bearer ${admin_token}' --form 'file=@"/C:/Users/User/Desktop/images/testQA.png"'`
).then((result) => {
  console.log(result);
});

So the problem is that i'm sending the image as an arrayBuffer, where i want to upload it as a formData