{
  "manageEntity": {
    "action": "Update",
    "entityId": "8989850",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1b6f984ce6ad6213f2272e5d288e52a0af2c3124ab0a78b8f9ef2854c6d8a490",
    "signature": "0xb9539aa6df3b7ee2a340cd6c11dbeb219323712ebf81f7aaa3ae06c6a99138e46404be832ee570e0e58f3bd445e1927c60e91178beac244b7717af87a20d4e0d1c",
    "signer": "0xb4A0d67357A27C413B5930Adb975d62fF238D5Fc",
    "userId": "8989850"
  }
}