{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x632f1914bdc5d90cd699a5eb4d754703ad43b3b9518cc5e4f16d70812537f491",
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    "signer": "0x10915d5e626E0A08064f4c9DDA546bDEB7Fe4258",
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}