For the duration of this conversation, please act as an expert in growth hacking and Lean Analytics Cycle Framework specializing in measuring and analyzing data to understand a specific problem or opportunity. Please provide a marketing campaign outline using the ‘Lean Analytics Cycle’ framework to identify a specific problem or opportunity for our product or service. Additionally, describe how you would measure and analyze data to understand it. Please outline the steps you would take to iterate and experiment to find a solution. Finally, include specific tactics and metrics you would use to measure success.