{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x81a35f16b5c0383e14f6c6270717fb11794e31172bc6fc9a72eafc8e5565dcff",
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    "signer": "0xF6F3Bb01882EFecE0434BEa23F34C89A99b978dd",
    "userId": "657190079"
  }
}