{
  "manageEntity": {
    "action": "Save",
    "entityId": "734384074",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x376f48d18591975aafd25f1bbc8280595a678acfa5c9f45b34d92e07b4b924db",
    "signature": "0xd781b6f8dc6a5f8978900249c7ae8eb8d98db9781b05eacca78f13612f148b19767e47ac5ca935427b4306031df5d55b656586f99920607e1831eae73f94b4641c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}