{
  "manageEntity": {
    "action": "Create",
    "entityId": "1507834190",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1507834190,\"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": "0x81e9009ad2970aac061fc6a204c439d0e1149a0495c664f1f776f855d6822863",
    "signature": "0xac1914d07354e83187ae191c98be4d5347e5f881dd0c343e2a5fc3225599163f7ae7978f5e7a531c52782118a7695f9d74feb035501fae90ef4580ae8eeda94e1c",
    "signer": "0x4AaEFEc5eDa9eFaA2090e939ABCc15d777818a0e",
    "userId": "760122156"
  }
}