{
  "manageEntity": {
    "action": "Save",
    "entityId": "53569",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2df72986cd9fb36b57c182261af6b75fb85a9ba4b97132f0f928768e65836355",
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    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}