{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc59970f750c98fc5461e6bb01d6c99cd96f349dcee7dccebcb13e4553b42b98d",
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    "signer": "0xa5673DbC5E23B4DF63BB330C1fD911F347713510",
    "userId": "536123760"
  }
}