{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x053250251ddfd4cee1bf711586c689f46fbcaaccd1594d8fbb8be9ae20cb4982",
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    "signer": "0xD23c96a130623326f2d6348fF466F611CC78067A",
    "userId": "607041972"
  }
}