{
  "manageEntity": {
    "action": "Save",
    "entityId": "2090671408",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9e4afe33050ad8e0822be9b2a02df994b90b7cf2705d917103c2fd91b32f2dfa",
    "signature": "0xa269ce893322005af7088e01e1ffb772c1b3de7df2a644fb94117be9e12847350a190dd660bc79cd475180a78b1fd8c9223e79a5ac170e97550b0eb05f55f24e1c",
    "signer": "0x38648cAE6c1E69869B895d522E9Bd0f99400A573",
    "userId": "859952725"
  }
}