{
  "manageEntity": {
    "action": "Update",
    "entityId": "720276585",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x960bb0714d8607e9e5ba172770c953b6d44ba612cedd39d11468b8911dcdd52b",
    "signature": "0x061e8bb635ad1b47ca724c42c1feeeffd1cfa16c4c277203c0935586dad41989799605bfbfc0ee979d0f6e4f392ff65f4a55049b266635f5054905449bc9fd6b1b",
    "signer": "0x1478EA92B5176D48396563da728425ea1d5Db728",
    "userId": "720276585"
  }
}