url = URI.parse("https://uploads.pinata.cloud/v3/files")
 io = StringIO.new(io) if io.is_a?(String)
 # Form data
 form_data = [
 ["network", network],
 ["name", key],
 ["group_id", @group_id],
 ["keyvalues", JSON.generate(key:)],
 ['file', io, { filename: "file" }]
 ]
 req = Net::HTTP::Post.new(url)
 req["Authorization"] = authorization_header
 req.set_form(form_data, "multipart/form-data")
 http = Net::HTTP.new(url.host, url.port)
 http.use_ssl = true
 res = Errors.retryable(interval: 3) do
 http.request(req)
 end
 unless res.is_a?(Net::HTTPSuccess)
 raise ActiveStorage::IntegrityError, "Upload failed: #{res.code} #{res.body}"
 end
 JSON.parse(res.body).dig("data", "cid")