{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x15125745c85dc657abd7a743b87f8561be6664d658736216da613d4f122f25a4",
    "signature": "0x5a8c370add62b236df1620d8e8f2a33cad833cec9c1eaf08aeade72741eb378f645b0488947c3b931c6ded01902c33790f3163bff4db5f7f7ab53ac249445b911b",
    "signer": "0x1eFe7ddBC69f2C0E537B2Ca5d4f10491Ef1b58DC",
    "userId": "828399884"
  }
}