{
  "manageEntity": {
    "action": "Save",
    "entityId": "75104459",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1c716797cc04c68c8ac44556ade71b37383034a9bc65207d840394caed09e8ee",
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    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
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  }
}