{
  "manageEntity": {
    "action": "Update",
    "entityId": "87303608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9857f7b21d6aec91e307dcb8ffe89d00dea80c07ee39b98387a6aaa8740e6762",
    "signature": "0x1d688a42e43f475af273b41b355615f3f7f2eacf97cff6c2890e9686e45b5bf93a4517555b5a1d8266d0b25ebea2efbc5188f9a61575f83fdc07db6a74eb7b271c",
    "signer": "0x80bB52585744a51EFA08f3a3C754ee86Cb12b37C",
    "userId": "87303608"
  }
}