{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x039ceccd6c6f35dac0be9a7093fe96030568016157147b190559eafa54cd5db2",
    "signature": "0x2534e9e90922a226fa961e24ad3fd453c9c242313d1d5d3e4e8a06554f3e0dd942c24a721943b1aadb524cfe520ce58c4a6b1ac71adbae025720ad67711de1391b",
    "signer": "0x6f8BC7aa66bE0e5B33989DA9327BD1067F2A49Ff",
    "userId": "709098028"
  }
}