{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x171d7a54debe133efd750e21d42ddb36df5c235086c0bf2e87e80145879cbe95",
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    "signer": "0xE988e6Eebc4127285f629AE1492891F39a8a127F",
    "userId": "403030589"
  }
}