{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6032c9dcc76772f755c99285a86ee6365b60dacc28d95964762f4fb3409046f3",
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    "signer": "0x5FA2B167c916071160F5c8A5e82d24bA7268988d",
    "userId": "860340972"
  }
}