URL and json example of how to search for a custom field on Organization

API
1

URL and json example of how to search for a custom field on Organization

URL is this:
Log in ← this is the custom field’s GUID

Does anyone have an example? I am getting this error right now:

{
“success”: false,
“error”: “ServerError [ERR_INVALID_INPUT]: Invalid input: "fields[0]" must be one of [custom_fields, notes, name, address]”,
“error_info”: null,
“data”: null,
“additional_data”: {
“failed_fields”: [
“fields.0”
]
}
}