{
  "manageEntity": {
    "action": "Update",
    "entityId": "577745560",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraihlpq7d2dwg7pgebj4e7dsxwomrwuria3l4qtd2at3ckecnbwfra\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":649011190}]}}}",
    "nonce": "0xd050f94da2e958886e3eef52d642e22905542af8d5d2a2ffd260c4621ac297b3",
    "signature": "0x845f35728ccf5c5f0a7e616ae584eef345524c059bba32d0c48ecf8086039dd2146843b853c61e54d1d420b0c9b7bfad724866dbe1b2b63fe79a0e019b82d4ad1b",
    "signer": "0x569AD4a425B92a964d8e182094f4aC58C0673162",
    "userId": "577745560"
  }
}