{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd38e266dc21fb5c126081e9b0b115f0387cb2dcd03ddbbbc41e585d43806d8ff",
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    "signer": "0x47D404E086ca1d1E8Ec7a563A4fF6c7115e69100",
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}