{
  "manageEntity": {
    "action": "Update",
    "entityId": "507929173",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5dadd2be1185442f635153d81bbd1d99420a326dbf1bb62a5bd49cbe676fbb29",
    "signature": "0xd34e5c6625019f356bdfb1703de34849a8d4df8e87398c45f142b447049ca175791792c9c7c031a71a95c948fd91d8e6f6577b051bef0b8be1dbbcd5a22644f61c",
    "signer": "0xfB5477237f31757fA2E881A769a1A86F058053f1",
    "userId": "507929173"
  }
}