Hi Adriana,
I am not sure whether you have already this blog post on moz https://moz.com/blog/relationship-between-organic-rankings-and-social-shares
This would give you fair idea about what actually you should be doing for SEO using social media signals. I find that people fancy these technical terms too much, you just need to follow the right approach to reach out to your target audience and a strategy to engage them. This would eventually get you traffic and ranks both. You should also read mine and other comments on the post.
I hope this helps if you have further questions, please feel free to ask.
Regards,
Vijay