{
  "manageEntity": {
    "action": "Create",
    "entityId": "399997806",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":399997806,\"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": "0x7d2c29d6cfd9bb5b2bcadb3b77643bce5d0165176fcf3e2a233d2c35add88284",
    "signature": "0x3f2fbbe6fdb46907f2d00ed640e9169bbe97cda36f2f83cde107abdfea5e7a822b611c8f2ce3d179ec21e1781e62ee9b5ebb1dce8253fff443ecdc76f0ce736b1c",
    "signer": "0xA057bBa0eb386F1B2D4740a96749971CDF62f66B",
    "userId": "156660389"
  }
}