{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0995467817edb30c462a354b33b709a276db481881da38cc9c855af7f9505cd8",
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    "signer": "0xe840Ad6F5f1ed80eAB032EeF491f6D569ad605fB",
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}