{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa0a2c9c606b2597397eb822b3c2f716baa2bcbdb7c30c9188b233ecd946e6dfd",
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    "signer": "0x7E025b0DE8c7997003c61b28C8Ea0C74b45B1a6b",
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}