{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe7aac70b94d3c93373191a789d5455e2ccec663252232a9b8ba160327e7b7dd0",
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    "signer": "0x74F2E3a6BAA3eD1953D05E7432A5dA2F92f61604",
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}