{
  "manageEntity": {
    "action": "Save",
    "entityId": "487744262",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0205a5dfddd139f5cd391c4690d0e4c4a4b3fb7b7d4f5c906dd161a8765216ed",
    "signature": "0xd089edd99c84e383357578fba0d6f4f5190c2408599e3bac7d4cd4fbff0bd3913d31e0b1b8750e2a9b60b3b988780a2748a5793f7f23d4680775d0d40f4c6d381b",
    "signer": "0x836816C738a1b5c5e31039b3A351DbB946361a7F",
    "userId": "375546979"
  }
}