{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0d6a3b9615ad32fc34f22f6824f34351a93f5b05ece2e0a263cfa224fd84156d",
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    "signer": "0x22755B2d72c0de00840F2A791184AFDAeF46deA9",
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}