Newsletter

blocks:
  - type: newsletter
    heading: {} # (optional)
      surtitle: '' # string (optional)
      title: '' # string (optional)
      text: '' # markdown (optional)
    form: {}
      url: '' # url
      button: '' # string
      hiddens: [] # (optional)
        name: '' # string
        value: '' # string
    grid: '' # [small, medium, large, container, full] (optional)
    background: false # boolean (optional)