{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x889ae9e96382d036914a35a601fe2c1d51ec5c6bf81f592ea195f0c06b457453",
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    "signer": "0x66033a8AbA9dde9bFbe6b9A7bd392F9949b1A659",
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  }
}