{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x53e908e417f2027f16bed5508842c5e7fa09ded2e82c1daa58b808863befe448",
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    "signer": "0x7418199cEc104b0743B1B80843a44529347DA19C",
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  }
}