{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x056d995755ac37cabd8c973855d3cdf191f73e25a580b60f4161179faeb42f59",
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    "signer": "0xcAe2eF54DE79dba2f45BFa8758eDF54fa4444AF7",
    "userId": "895976329"
  }
}