{
  "manageEntity": {
    "action": "Create",
    "entityId": "443146698",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":443146698,\"description\":\"\",\"playlist_name\":\"a 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": "0x0fa0e19b4b7795875d77117459d6da73277aa2bd2e1ed92b034e0a5eb6b5760c",
    "signature": "0x15d993fc78f6177e22679db859521b22e186331cdeccb9d481b0ec3de850f3e813402f1bd9688f414e597af52322fc6d7a9ecde632eddfbbfdfe7074b13bfa631b",
    "signer": "0x90f6A2b71Ea7E6503259ef2dDf599Ac64Da1e21A",
    "userId": "253272446"
  }
}