{
  "manageEntity": {
    "action": "Save",
    "entityId": "20691",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x18eb4f91bb90de8d6c98e6b25579552c2fbe224bf09061f0761dc4774a5ebce2",
    "signature": "0xfd5fbd9dd7f3cb39ac4a36813a0b5538fa66f39beded734bf798f2d12a2a0b1c1f06aab98e449a43b25c91f5c656d1fca403a6c4640ea460097ca60bb4ed8e601c",
    "signer": "0xADBEc7CBdC007B087ebc7ae272f8a3cf42Ea0184",
    "userId": "466377094"
  }
}