Create provider spec

const response = await fetch('https://api.bringyour.com/network/create-provider-spec', {
    method: 'POST',
    headers: {
      "Content-Type": "application/json"
    },
    body: JSON.stringify({}),
});
const data = await response.json();

{
  "specs": [
    {
      "location_id": "text",
      "location_group_id": "text",
      "client_id": "text",
      "best_available": false
    }
  ]
}