{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb19723dfc5363f694d5f93a731640592ca931ffadfdabb6c64df4a43797c6c41",
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    "signer": "0xF4b3f4080E93318aE7dcC7c74C79fcC9336D9960",
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}