{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7109f324ce34abc3419728018eb23d7a6ee18c22564e0c0c6a3829686ae08344",
    "signature": "0x698f24244534567b9afbef21855e41037d779b20958235278c2f9fbebe7379585cf66f0ce7eb1231e335bcf8852024d0115631af949c7928c848b06a671dfc991c",
    "signer": "0x0C2419693CCc2ac3Cc41A0f940192f2dc6eFf86C",
    "userId": "809712791"
  }
}