MailChimp Marketing Permissions API

As i had a hard time finding anything in the mailchimp documentation, i thought it might help a lost soul to put this info here:
If you cannot find your marketing_permission_id of your mailchimp list (eg. for GDPR compliance), you can do a signup request (maybe others too), 
using the API, and it will return its data, including the marketing_permissions array containing the unique id for the opt-in.
POST:
{
  "email_address": "[email protected]",
  "status": "subscribed",
  "status_if_new": "subscribed",
  "merge_fields": {
    "FNAME": "John",
    "LNAME": "Doe",
    "COUNTRY": "DK"
  },
  "marketing_permissions": [
    {
      "marketing_permission_id": "666b666b66",
      "enabled": true
    }
  ],
  "interests": {
    "000b000b00": false,
    ...
    ...
  }
}
 RETURNS:
...
{
  "id": "XXXXXXXXXXXXXXX",
  "email_address": "XXXXXXXXX",
  "unique_email_id": "XXXXXXXXXX",
  "email_type": "html",
  "status": "subscribed",
  "merge_fields": {
    "B": "",
    "COUNTRY": "DK"
  },
  "marketing_permissions": [
    {
      "marketing_permission_id": "----->ID-FOUND-HERE<-----",
      "text": "Yes I would like to subscribe to the hummel newsletter with news and deals within hummel's product range. Read the terms and conditions here. You can unsubscribe at any time.",
      "enabled": false
    }
  ],
  ...

Just a note that you can get the marketing_permission_id by doing a GET request on the List Members, or on a specific Member:

    "marketing_permissions": [
        {
            "marketing_permission_id": "abc123",
            "text": "Email",
            "enabled": true
        }
    ],

Hi Scott,
Thanks for the heads up. I was unaware of this (and unsure if it was possible back when I needed it,since it was a while ago).
Sounds great though 😊
Br Ronni