{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x20e2df630cdc8f9e0f84d30d7cc1cab885349474b6fc39f5012c3adf5359255e",
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    "signer": "0x9D19f3A167B4Ec3E71B5410C5c326F6dd015b474",
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}