{
  "manageEntity": {
    "action": "Save",
    "entityId": "224434422",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x60b94f13732f0f6713acec7edfd6b8823a903ce037a629cded2e6847e2508445",
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    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
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  }
}