{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb80dabf0fe2c7b3d9c6b797f1d403e48663edf1ed295baffe86bd02e601a6816",
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    "signer": "0x53071d47d055802863E26EEcCc8fdc980917a696",
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}