{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2d770d319c7108c099c0650ac952ebaaca25d424644bb2b51f1e9e42c4eafae5",
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    "signer": "0xaf290d2E9c144182d6eCd4E5c94b73cA11feB1eD",
    "userId": "820138470"
  }
}