{
  "manageEntity": {
    "action": "Update",
    "entityId": "916173370",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7oyzvfwnvq3cmsbu6n6zsvgs45xoptj4do4utdtyf4xw7exo3ihq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1376488566}]}}}",
    "nonce": "0x0af82fd1ca78bc0d1b9107344b3f99bffae5165a30cae9665c6eea4f03e84821",
    "signature": "0x01df45920bc5f6be85aee1aec1b39493bcdb72bd535514b8c0ae67f703e2ce996065681814ba8d76409f2d6872c08bb9e2ef32634f9c0844211ac1dd269d59ac1b",
    "signer": "0x180C16db7555b6df15e585167Bb5895EB1a9415f",
    "userId": "916173370"
  }
}