{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8aeba205378dfe8be05038ded14c6e75d8a0ad615f4927cf99f2ff6b86e31417",
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    "signer": "0x0fdbE0966d6f65E3DE225D16D06131c10d4F2b3e",
    "userId": "560630042"
  }
}