{
  "manageEntity": {
    "action": "Update",
    "entityId": "778808623",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf511252af072e475b138a478f546c5fb1e76723e49ffe3f988b9dd2f945496d6",
    "signature": "0xb7ebb173151bd5ddf078b3b8dd57314c90350b89a00fd7070d8ffe25693e8685304aa164cb1f6fe751ec6812631afddc5b3231cacb4bd055058acf4bf183311b1b",
    "signer": "0x8A7A8486A2ebFD66408518A3dEfF9208e10d437F",
    "userId": "778808623"
  }
}