{
  "manageEntity": {
    "action": "Create",
    "entityId": "1399805520",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1399805520,\"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": "0x2abb3c95cc0e642aa8b2e2aa1850185d20344a9baeb57a4ea82fefb0fa0bd8b1",
    "signature": "0xd7836c20dd9eaabf46162505da497c51929eab91f5091f43e5f94bb47844c6fa256d61d042f257f111ed40d7818246d9a79219217d339ed25b92aced6e884e1f1b",
    "signer": "0xfc589450A34B7D25aFe38A17B179718108fB7b9D",
    "userId": "899796889"
  }
}