{
  "manageEntity": {
    "action": "Update",
    "entityId": "502583624",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradshxyhejaovkziimj3iuq5dfp4yf4n7xznl3fonytj2re5usa64a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":790207744},{\"type\":\"playlist\",\"playlist_id\":1243923681},{\"type\":\"playlist\",\"playlist_id\":1537806732}]}}}",
    "nonce": "0xa082f25fa7416f550dd11db2d17a06e500e1ee1837d32cf5e504fa725d16c5d1",
    "signature": "0x0220a2b60a781388738a0047250ff42da783262ddf86ef9cce85ed6de73c6ad11b3ccb1bff23b956b4cfb0f862690b54bad239ff5c8f84e06bbf95a006a55faf1c",
    "signer": "0xF87E352dfe47f2c9532a6F5127847cC6460A9958",
    "userId": "502583624"
  }
}