{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd70872b50a00de319f48bbf679fa7f3727eaa42d50235eb2874f3adf37adf3ba",
    "signature": "0xf602c966394e69960fe836060a7ba89b227b50dc19e40a2cda858df2111f3aed03e1db7fb067217c59a6d2a47c896dc6a829bf04b8e7df1bce1bb62b3f70d6e61b",
    "signer": "0x1bC25F25fE5A19a1C628c4c0E994E67BB0b89367",
    "userId": "754969959"
  }
}