{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2dfe557332e1003562ffeafb5c9fe29bd695206b0dda7546cd5f1a534f672358",
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    "signer": "0xEc1F2DA7B666359aae17538740728b216750462f",
    "userId": "92821697"
  }
}