{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xeedd2bd9314e5a473bc377613c46fa41a713f019b61fe8b1f0ddb158712303a0",
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    "signer": "0x77C6B27E16EF85aacFc3f52e4f28B74CfB1dA4d9",
    "userId": "303550786"
  }
}