{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9cc2a62974d522099936701c30e81e8d44d9f7ba253d2e06943face1446ec908",
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    "signer": "0x7A36eBF15fC48F5a684Cd15006959be84dFf15d2",
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  }
}