{
  "manageEntity": {
    "action": "Save",
    "entityId": "1299924151",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc5d09eadbc8cfd7b740a19e32706c4417b03d4f8d8adcdcb95ca964e8c7e1f13",
    "signature": "0x9a069ea9c96f2bf0857b1cbd2d9a3caff116563ba5bba714de8f664d84ef76151d2c7a58a7fc4645bab956876c014629024597d5f24af1303bd6b02c870b8af21b",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}