{
  "manageEntity": {
    "action": "Update",
    "entityId": "103803867",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd074dba971816bf7c859e115548e133b921bd7cb9a890c667f33c819dae66396",
    "signature": "0x37f3c4936e7151d124e4ae4fadb5dd4ef7654a0f81496ef468b5ec57ad3f847d715cbfb6aa7fe5aa40866b36a5d1e7bedf1fe0d7c6f9a076d4a78e087c684cca1c",
    "signer": "0x83968a6b9255Ed8eBc57cF77a69694Dc70d13C61",
    "userId": "103803867"
  }
}