{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdc67d339f5286b3de5bd82be8637ab4b950c1d83a2ddcdc198ae04ec91074657",
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    "signer": "0xdBc715E40eD90b7e6cAB709B5e73c73E30faBAB0",
    "userId": "988999702"
  }
}