{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3dbe5f4f32ed13e6370bfc781a674af3c64889a4413d65a99406fe2dd4b44757",
    "signature": "0x8d7b9736e7dbf2394485efedc5a55a47e57f53d57fe7c6fd89a9cb2368534c3956c15ac3ae1e34d64c1c8df21842acbe32647cbc3ad411aa1689148a4783be151c",
    "signer": "0x9dE1167A836B21C1599dEB1a1347A5c25CB77Ef8",
    "userId": "648681585"
  }
}