{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3ef2dd1d218517c7438c0364be60385e03b1a69542ce15e0e612c62735a10e84",
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    "signer": "0x99FC58b9AbbC0C373045aaAE3Ca68Ac6e5b586f8",
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}