{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x24b3bf108fd8388916742d9702f16bc3472d50cee81c048d6b98800cb0d0f966",
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    "signer": "0x7187121202662Df9cA95764a23676Fc193636F53",
    "userId": "630392492"
  }
}