{
  "manageEntity": {
    "action": "Save",
    "entityId": "1320548787",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf40ff158449db72c3415b5db64336695d04cb10115d2167307e339e8ce6e4b40",
    "signature": "0xac00b8990454018d85437102fd977cb1706ef8d77a8e93e0140bcd8a6a467c5030b52d3f67bf01db09466dff22dcb92be34e2dae13cab1e610616971a072d8571c",
    "signer": "0xEeea4f65FD2D7EffBC68176EAbe8544B088Aed57",
    "userId": "584616263"
  }
}