{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe07ed7d60a1c9e62383c477c81faead5d27a58642ac640a18d62556d43a4d5e0",
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    "signer": "0x0b5154bA4A70cE61CC119fa2cc8f7e52c84586b0",
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}