{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x69b09034b5f0be6f6ccce5e9a4dbb6d791c383442237675d7503a100221c17dc",
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    "signer": "0x9A5E16E48e938860681e75D3d0Fa9f61982e52e5",
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}