{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1fa333fa38af4627748738baba42327ed6d91124d262d7e91b36bd0f2af5aae3",
    "signature": "0x938673b6b30dd61d4f3507d3834f4f5eb0f48b0d31e42d227e5a58602b01f76c2c58abbc3a11ceab26c3e5fa6033f95e787d3edf516c2d89d2648a73a035b36b1c",
    "signer": "0xa7F7C284b67c3964a36eB3eA1C6697428fa1546a",
    "userId": "456763559"
  }
}