{
  "manageEntity": {
    "action": "Update",
    "entityId": "674724902",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierazkvxr6h2vavfsl6gshagjryxku3opnkii7nu7ipddhtevdxzr5ha\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":431069960},{\"type\":\"playlist\",\"playlist_id\":158767467},{\"type\":\"playlist\",\"playlist_id\":523215880}]}}}",
    "nonce": "0x1e52f45e721d644e47e7b21ebe8b6e0e1226b04c12d986225ac69c797f2dea7d",
    "signature": "0xfafae123c14257a6a5e4ad47881c4e0e060de6340d915a47c6cd067a3cf07e9401b7aa0df962e62f4e29ac199ead7ec32084f2363c7a75b2b2311a9b98875e201b",
    "signer": "0xec1Fe7f623469C68eBB52525A42b86C0a36db1CA",
    "userId": "674724902"
  }
}