{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4a3c3f2455b43acf957417adfd5f68da8c06ff101e82a9bdfa8e8767e17de20e",
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    "signer": "0x8E3Ac51Cc25a8320EE8cC8015D2784B17b9f90FF",
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}