{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7e81a795d5d259acae47e05968e290083195a95521d7c0b40ff7d88464226413",
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    "signer": "0x56eb77a888c3D5937d21169964968236FCC1edb5",
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  }
}