{
  "manageEntity": {
    "action": "Update",
    "entityId": "200967",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraphyshe3ljbxf2aaqajyupld2wr77ebo6z5ihx76kr5tku36wim3q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":910435833}]}}}",
    "nonce": "0xeff8465f3c2b238faa8bcf9fcb1c9c71b9c01b580114fb4cf36973dad2a3a71d",
    "signature": "0x21533017a8deb338a0a73f0479299511a2abaeceac258410bcb3bdec9abbf1bd76b69a085aa48441621ef4de06ea0da0f79ca89ed327e77157ea290ff08382d31b",
    "signer": "0x45568b7b08A46C17ee47F56f22C0AFFCC59c8103",
    "userId": "200967"
  }
}