{
  "manageEntity": {
    "action": "Save",
    "entityId": "40906",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3c0488ce8f02815de2e5cede10b0723bc513e55a5f1936b7447a1414a4c67819",
    "signature": "0x273c4750b19e288f204f06cc27b434f1353d7c7a31ca990b021234375ea6284a771fda22cc407f7e3756090a2a66de0e965db3d4e7d3681a302df91b6550b0691b",
    "signer": "0x3eE4afe430f711e8bc9Bd16614A3059C5b2e021A",
    "userId": "62125"
  }
}