{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0ebfda9cc4181a74a7ad0146cdc834163ce245ef1379e64cca3bbd6d1f48913e",
    "signature": "0xf6d7819fc49ef23cf1f3b6a01192cb2306929cf7adbb86e4d8be656bac66255d4f3871c55a848b9b2e77ee74832dbf8e760055a6fac2563a98822a24d25d11721b",
    "signer": "0xcBa8362f4620bDe115420aee3CD7E34A7B9ED3d8",
    "userId": "740958621"
  }
}