{
  "manageEntity": {
    "action": "Update",
    "entityId": "542424297",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3be4768535373d69d2113b139298ec8d834cd4a642bb6f9581043abf68f13853",
    "signature": "0x4489fbff4a81cb720b1873f08a0a7d34aec7e9f9743dea6d7880a60aa160625b65b37fe29d940e9cca1b18f4124246599ce636ef000a89bdeaa6a3b1fb143c821c",
    "signer": "0x6dD74f6D783f802B225b9224084e3BDE9909b6b1",
    "userId": "542424297"
  }
}