{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xad21e7290e74fe34a4643ace9a2c1f33fa84ab9220c67fded83550244283e078",
    "signature": "0x208b3109e38e5a8c3bb1940c8fb737126790fb3f121a6fe175e5afdb7872b4b57715285586d0cbc879a3f96523caf405680d011a0ac566d4868008ee46cde6191b",
    "signer": "0x2E2565a072345523FeCd90bE95baC34859891AfE",
    "userId": "794847361"
  }
}