{
  "manageEntity": {
    "action": "Create",
    "entityId": "536464454",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":536464454,\"description\":\"\",\"playlist_name\":\"New Playlist\",\"is_private\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0x553959457bb0efa777f100d5cd229b1fabc12a25b49735fb69347aab7fa868fe",
    "signature": "0xb7aaccfa2a56875e2bcd7f284607a0cfa108a74d9f76bbc6e2a0d49fd3c7e5197212fa87077e9c37cae89a1d66a3b517cca544add641c50d0f2d598846dc9fda1b",
    "signer": "0xD449c8DFa572fEED5a806cBc774F686025Cc7AC9",
    "userId": "111392384"
  }
}