{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x87608a25e335da4cb4aefd446c69277909d3de0ffdc2667f024a1cc525e7447a",
    "signature": "0x91bc355a216a0ab3353fdb2701f48b0b07b577fdd82d19f84a4dbd3ce98e6a7a24d42ec7116787f3e18d61ba181837d635f10d0b0ff014faa71f0be8b66da9391b",
    "signer": "0xCB95540badAB526C31007fd64aCFC7414b264E86",
    "userId": "59631881"
  }
}