{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf0bf18f3d65d4613146d88dd2148703c3a353c94fb5acfc25908e5a8051c8ac4",
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    "signer": "0x989faEfE658E0b6dF1793197b0De4137Cb1aDD3b",
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}