{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0660742f382ce1964aa7cd52f960b523ce16f7f321aa4ab9c7a02ffe06400d4e",
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    "signer": "0x9aC298099aB8B4b75959D80fcD4a931c056925dc",
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}