{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x69adf055e572967fbdf208a02a478021a1bae99cf0997692054c4050d4ac1b44",
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    "signer": "0x13B7ce3401B600B95DFBDC848AcE1C0558a2dF3b",
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}