{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x874fa92acf165979ef48209419cb688507cc5073267cb259f8d1f85ab3e98940",
    "signature": "0x339faacaadbc318f16bab9d7c4cecbffb72d0b2b29895c264a702298c7c8e7d959f0d338a61c024e85488c5716774dbeaddfd9fd11a5a19e137424e22ecd84731b",
    "signer": "0x2B6CC627A38edc32Db3Cc7Bec99d7CD6349c68bF",
    "userId": "578692114"
  }
}