{
  "manageEntity": {
    "action": "Create",
    "entityId": "2137543053",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":2137543053,\"description\":\"\",\"playlist_name\":\"My Recordings\",\"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": "0x73632111969c209d6a9d3cc544e1901ff7aaf7670114a17b4a286619b69fd9c9",
    "signature": "0x82d5f242ca9b12044bc9dd247ebf3073521e8c8c8db7a956f6980b6abc0a38885a0f093037b6058bcd45890aab7d585680a2cf9f23086349db4f0be88cfb33ab1b",
    "signer": "0xA4147CCFC411F5e57F45a86ce1b65fa98e90932A",
    "userId": "701043244"
  }
}