{
  "manageEntity": {
    "action": "Save",
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    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa5f4906d0f3c17b9dab6c219cd9b182362ced6cda7d6b7577c5cbdd8bd7ad9a9",
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    "signer": "0xA75Cba2172aDa64088CE75Bf598F74af5f92dEc4",
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}