{
  "manageEntity": {
    "action": "Save",
    "entityId": "1320548787",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x088638068cb7ebad7d4439d62f5f92094f682926a546ed9563f01eade93141bb",
    "signature": "0xc9c31418a40c90441d5a243a6141fd36651842e8179399cf5cf3b208e5af61f95e79ea2bce9e4ead51251df6bbfa45115a073a3ecc9e7975cafca1ae186e9f291b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}