<p>The Internet of Things (IoT) is important to the success of modern-day e-Healthcare applications. It generates the e-Healthcare multimedia data and test reports, which are confidential to the individual. Creating a system to store and access confidential e-Healthcare data efficiently and securely is significantly challenging. In addition to that, the requirement of resource-constrained security mechanisms makes the design and implementation of the secure e-Healthcare system more difficult. Blockchain technology has been an interesting research area for reforming the management of e-Healthcare data, due to its unique properties such as immutability, confidentiality, and decentralization. This paper proposes a novel blockchain-based architecture to address the critical challenges in e-Healthcare data management. Specifically, the proposed work focuses on ensuring data integrity through blockchain-based hashing, enforcing fine-grained access control via smart contracts, and reducing storage and transaction overhead in resource-constrained IoT healthcare environments. Additionally, an Access Control Policy is introduced to facilitate secure and controlled data sharing among various entities within the e-Healthcare ecosystem. The proposed model is evaluated against existing systems using relevant blockchain performance metrics, demonstrating enhanced security and efficiency.</p>