{
  "manageEntity": {
    "action": "Update",
    "entityId": "638455682",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera5wdj7rzvm3zbglycdtuk6namoernk4sxj5wvx3xmehdwvitedrma\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":1555170129}]}}}",
    "nonce": "0x3d618ac371d60944497425517e2f25fa05ca1ad2fc272a63e66d990d033aac6a",
    "signature": "0xfe29c87f0ca8655f852b6a949efb3877606d9d4b3de10b274e8a1f002dcb57140e97944a036bed700097753db66bc06938461f1cc5989070b36126569c27baef1b",
    "signer": "0xbAF7d0c9D9896A19729dD25850f216563f22bbFD",
    "userId": "638455682"
  }
}