{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf13604cd40e384d513c63b755a6b805c8adfd0da3975c90b59b6849a86b1876e",
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    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
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}