{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x234e38c38e2421fd7546855796f6bcded52df888ec106769e5a107d436b5d801",
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    "signer": "0x48C916EBe05F66b7c1c7B11e25cEFD3976d108AB",
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}