curl --request POST \
  --url https://api.tread-horizon.com/v1/companies/{company-id}/managed_companies/{managed-company-id}/users/{user-id}/resource_scopes \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "resource_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "resource_type": "Site"
}
'

{
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "created_at": "2023-11-07T05:31:56Z",
    "updated_at": "2023-11-07T05:31:56Z",
    "user": {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "first_name": "<string>",
      "last_name": "<string>",
      "discarded_at": "2023-11-07T05:31:56Z",
      "email": "<string>",
      "phone": "<string>",
      "external_id": "<string>",
      "schedule_on": true
    },
    "resource": {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "name": "<string>",
      "type": "Site"
    }
  }
}