{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0d2cbfc4b02f899bc8cadccc29dde7bab93e47e48860018d6b0e8324506c99a9",
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    "signer": "0x582810fDE34ef7183A2AbDc4824EA3415C9f171a",
    "userId": "823048563"
  }
}