{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd097cb5ab6b7c917507c4cc6eec14e6705ef939df5b61de14339f1763fc83e76",
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    "signer": "0xc0F879314c258a25a97b83fa1A16c1Ecb6700328",
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}