{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9548c4ae87ec94820693046f1c023c0371df2c8d711e22706c21eebc48b47842",
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    "signer": "0x6D0F08ED4F67eD919545fE731F99333c6d85E9B5",
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}