{
  "manageEntity": {
    "action": "Save",
    "entityId": "1294305171",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe92c80c10bb9bac0a9d8c31564cbb536c08f73b0851e66f3c0173c696cf07800",
    "signature": "0x0f10a66bb380c52791c7f854a36726a867112301af85ac8c84e40e3135e75cde4f669941d0509741d51f6bb879ea821939f9f93fe9dd8b0e8c9d4caf01065b961c",
    "signer": "0x436637bD14cdBAb950deA5e8ab694896216708Ad",
    "userId": "234122192"
  }
}