{
  "manageEntity": {
    "action": "Update",
    "entityId": "667857623",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd7763427d147029e9a1a278908c293a35991e857c7c33430941265a92397fe78",
    "signature": "0x89f11f6f7278dfad60a17edb858bb2f5c7e4b18c07905d74ee7be4f5833bd39e3d8ba79b2a8c8fd5d2620d28d7b3623c2ef271ea2562ee7371b04474ae0785861b",
    "signer": "0x314D77b75171AC7C89c8787106d3b63262c769EE",
    "userId": "667857623"
  }
}