const options = {
  method: 'POST',
  headers: {
    'x-api-key': '<api-key>',
    'x-api-secret': '<api-key>',
    'x-connector-id': '<api-key>',
    'x-owner-id': '<api-key>',
    'x-session-token': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({description: '<string>', pricePerUnit: 1, quantity: 1, totalAmount: 1})
};

fetch('https://api.runmorph.dev/v1/resources/accountingInvoiceLineItem', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "object": "resource",
  "model": "<string>",
  "id": "<string>",
  "remote": {
    "id": "<string>"
  }
}