{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc6ead0e0b04c09789ffa3e3ee645c2cee8df41e7b5dbd4da9c5b89fcbf169b3a",
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    "signer": "0x57B72EB07de2F234F10e779f1Ba99344cEa3B3A6",
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}