{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9f2026f9b990bbafa5905ed8fdee8ba38a2d7d533d072f51be72da367b27c708",
    "signature": "0xfb60e711e8e72fde0462847a1cd2282b59dbf17e90e45255723f1db3e98d9e201edfbb24cd1f272d56842c8dcde57639733cf0840d6239a4cf2e2be04e0834eb1c",
    "signer": "0xeb71D7bDd9f1cA479325005f04564BE9BCeEf113",
    "userId": "952847282"
  }
}