{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf537fd7d3df319c05deda2b48700c4cfa1be9d9205485930d7feb55fef0ed27d",
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    "signer": "0xE4b7Af91972437c8c74EF4d026c894BaC9ac5e10",
    "userId": "264951831"
  }
}