{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5aa435ab9c18e0bdcf3f715c509117a6b1363a8eea5be65adf555fb1e8759988",
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    "signer": "0xEe85D3B01F3A7c280EA9b31Cf9121e93d57B9dd0",
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}