{
  "manageEntity": {
    "action": "Update",
    "entityId": "581383209",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4d71df03b0e72ca5a1467aa7f84baf1ad84469fb5dbe3ed561a27bba0c6d0300",
    "signature": "0xc5b36894599648b85a7a0171f591af915d02736281696e89901c28c1ef9d5bc759816938cebc59328c5e32e4bc8d53924599b13599f3d067cd191398c33670731b",
    "signer": "0x30c6478C8812030BfAF8A230bd71dC513d9b7be4",
    "userId": "581383209"
  }
}