All Nature Communications manuscripts must include a section titled "Data Availability" as a separate section. For more information on this policy, and a list of examples, please see https://www.nature.com/documents/nr-data-availability-statements-data-citations.pdf In particular, the Data availability statement should include:
We strongly encourage authors to deposit all new data associated with the paper‡ in a persistent repository where they can be freely and enduringly accessed. We recommend submitting the data to discipline-specific, community-recognized repositories, where possible and a list of recommended repositories is provided here: https://www.nature.com/sdata/policies/repositories
‡They mean article of course!