{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x88685904f384df8f1f318e14a93ff7bfc17fccccf97d55be0c687f4faf425f51",
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    "signer": "0xE7aEb0446F689b1C66EDB46AbB9909cC34FD5A62",
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}