{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3f23d69f51ac4b095d7ea5f51d0a2375e79329fe3e077b2ee5d25889171ea844",
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    "signer": "0xACc2fF4480d43bB7560718464314ec17310Cb8C1",
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  }
}