{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x336dc7fac9938e49f96d93ffedb2e89a76b1484c5132ea7435bc51feeff0346d",
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    "signer": "0x95ee1C6815A731436D75209f6bF0d60DE938567E",
    "userId": "63707831"
  }
}