{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3f046e98ec53ac96d3dd8f9a972655a82b44194461eaeb61f85b41f219c759e6",
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    "signer": "0xC5d18b553bBB15AF66038908A658cA6d2A61438E",
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}