{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xfd9acb9f3de6e7ea2683a4f5f4aefd3daae7222301dca43531c145de8e34c5a1",
    "signature": "0x9a43de19f4d6c326a908ac4ad5ff8765d71796c28c89f4778eee5cc8497a0a8c4d9ee735aa38c9cd7fed3d14b8cd0b07a2b0e7323fc93f859336acdb22aeb1081b",
    "signer": "0x1F72a867373a27415F35f6EBA90FDA6490780a43",
    "userId": "243685858"
  }
}