{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc17a3dc8fb8411ef7b33a7d1af995e5ab632bc8ef9b9dd956044429156c6b70d",
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    "signer": "0x56c986DB4796DAcef59fc3A373338aE9Da99E4Dd",
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}