{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x15a8971330e205ffdd63713eb780dc7940f301c4cbffae6c7a02dcb34912f408",
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    "signer": "0xA2ED571bCe585a15704A0AA41c033dfD6E7Cb796",
    "userId": "735707434"
  }
}