{
  "manageEntity": {
    "action": "Create",
    "entityId": "551485758",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":551485758,\"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": "0x1f76be2ca1611d76c598086b508fc37cf2611d6148ad018336efcfbed46d69ff",
    "signature": "0x28d30705ea9d6c690b918ac670e4ca4a619f39da5f854e13d6168929c307d6f90e46cbc1dd47c259d2c1feffbd15b8ab82fc1396174ff5afaa70d6b26377b2b71c",
    "signer": "0xcB43309996a219bE26CA3f52081196731cffd0Cf",
    "userId": "590410636"
  }
}