{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xfe75b7d6ff85209fb658c051b33108d8c84a3af7793882299867ed54b6da9903",
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    "signer": "0x9325ff401c082e872909b4C9BC40a4522d8182ff",
    "userId": "875994361"
  }
}