{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa19edbd6ddd4abadafc22f67f1ec177f8ddaa59db58a9fc4f598e1141505dd0c",
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    "signer": "0xa94e4C47a5C11B5C0b4EC90e5166c3AF602dA094",
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}