{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xed337e994563d3f08f350ba8b45dd1e4d840e80648323ff6d96048287dbce131",
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    "signer": "0xdfe57c03CEbfAc8a0e56Fb424f5c286d229C98Fd",
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  }
}