{
  "manageEntity": {
    "action": "Update",
    "entityId": "537952097",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe75f4e00d6fc40941c7c032b26e9371c542f6ce761d6653a633acb5a6d70e108",
    "signature": "0x22e97b7a89384a62e1bd32d222954a62ff096fc4cc82faa6d8b2ca73a4f8f6ae6e587737d28815d7b91e74b8ed01fc240d492a6bb90e977f276c608b452a16b41b",
    "signer": "0xdbe44e0A42902255f65F64BD2C40FCfaa5910825",
    "userId": "537952097"
  }
}