{
  "manageEntity": {
    "action": "Update",
    "entityId": "974403669",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8bd29a8a6daa41397f316275ac1cd8a55e4b134a6fc742776bebca1e3d64aac4",
    "signature": "0xc7c3b33fb9c665e16529d02e9d83a606c812d5ecbd7146f1933322317d9ec69e7418d38700ccecfd7112d950966a309745ea31849d9d845c63d446dbcb85d4d31b",
    "signer": "0xaa223Ad6AD72c8f702876eb61AdbaE4F1f36EBA1",
    "userId": "974403669"
  }
}