{
  "manageEntity": {
    "action": "Save",
    "entityId": "117659",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb9469560a3d596cbe359b54b3335e0ba8ae56c17d901ff69cc53582b6e7df44b",
    "signature": "0xef0ccd7f5db1911de20dc5af618a2f9b259317b0a6852c39a7e19f9379ceb61958f9b53ad857969608d4c0b878095fb6e171454841d74ecbe130139c16114de91b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}