I believe the "We need contacts permission" message is key here. The message should include the purpose for what the contact data will be used for when asking for consent.
> Specific – consent must relate to specific actions relating to the data rather than for any purpose the business wants it. For example, if the data is for a newsletter subscription, it must say exactly that.
> Specific – consent must relate to specific actions relating to the data rather than for any purpose the business wants it. For example, if the data is for a newsletter subscription, it must say exactly that.
https://www.gdpreu.org/the-regulation/key-concepts/consent/