{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9538543ccc566d7001731e96daa3de7702c1cf6ffa74a1f82192f054d622c908",
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    "signer": "0x4cB6E3a04248eEDa6Ce4f2a95AE4eF131b35fBE9",
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}