{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb9d3200a31de97c81b8aaa8ec0d6eea33a8cc7970db5b226bd461297c9471ac3",
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    "signer": "0xfc52239a349B0823dCE1e993B67c989F3c37498a",
    "userId": "681165804"
  }
}