{
  "manageEntity": {
    "action": "Update",
    "entityId": "782603281",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x42aea717e8d4080038ef8a34427268a9877e662a07b44526ed3b2c4dda263852",
    "signature": "0x53e20778cec4e450e95290b2ab17da2f4d4a9cf89734276dc41d7ef7a3f46e1f3423767cd13424cc33abbf19c6cb755b964bf08c54b0d8548f8ec81e687524611c",
    "signer": "0x2578e08e63e9240DedbEB392Be8356ddDBA5Ebea",
    "userId": "782603281"
  }
}