{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd4c5791c6f14211bb3dacd6138acea401f60479dd516ebee6574f55b66572a59",
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    "signer": "0xCca03E7a7DF8E3D6fCfBFA90F5735F6e8e2812c7",
    "userId": "243114379"
  }
}