Hi

I am trying to update a field on a contact using the API.

I am able to authenticate and get a valid oAuth token with the 'auto' scope and I am able to retrieve the full list of contacts using the API.

However, I am getting a 403 error code when I am trying to update a contact using this endpoint:
/accounts/{accountId}/contacts/{contactId}

This is the payload that I am passing in the body of the request:
{
"Id": <ContactId>,
"FieldValues": [
{
"FieldName": "First name",
"Value": "Mike"
}
]
}

Any idea of why I would be getting a 403 when making that request?

Thank you!