{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa64296dd22c6d8724091aaee805ac52476396c6f536828de8fe20a9a0bfb0d4f",
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    "signer": "0x7A1f214312F4D997f528a3d3C675C11eAbbCB0BE",
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  }
}