{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x84c36df10f4c7cc880da813f44dc474206573b20cbcc58da92d75db4a6cf17e0",
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    "signer": "0xfE68632977dFfBE9213D73b22c54a5A2DCFEaDCF",
    "userId": "637504294"
  }
}