{
  "manageEntity": {
    "action": "Update",
    "entityId": "368251394",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xaa5691ded2aa6bdad5d0f9e87f48b8319a2fadcf978958e0a68a4d2185ab7323",
    "signature": "0x69c9611bec4ca34c0b741c9b7fd805923a8fd6ce5b537aae19f1956152fbb0c974030ab0bf0df18eaa457983ade3f3f154eb38df1c6c46e97b4bd437f71f5e4c1c",
    "signer": "0xD16DE964b94Db4bDe46DDe6B86F2e9193b7A89dA",
    "userId": "368251394"
  }
}