{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa730cca5f3b9237e2af293ae5551d652c73da4ab581114862049f0871d876f39",
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    "signer": "0xFD2162E1F7e40bc9c5EA89625a13675C62D7388e",
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}