{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xec6a18197980594c0ce1731507a4b79012e9a67d0f35aa2aa8c123def819e87e",
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    "signer": "0xFf3201A7dd0F709163B34F121Ca470026514a73B",
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}