{
  "manageEntity": {
    "action": "Update",
    "entityId": "407216161",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3c69949ce4c26bab93a6e26a2c03e7e8fb2bcb60a1aaf1f94cd99545d0f27b4a",
    "signature": "0xf9b3fa048e4c533a6cda082749fbcc214a2ded4b93d45378249ebae304334be727fe7be6a9323b501cf256f2b10967c3ec1748bd0ec446edd5ca5af0cc51cab11c",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}