{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xba0a3dc9ff99d1a6c818dbe7c298536eeff8410257a4ec449ce38c3d7496fb1f",
    "signature": "0x3e2eeb9aaabfd75bfb2c78a583ab99190e76f7e59bd8da4dbdfb51f30cdd567867ca1187943d37a118ff1f179492a98b67d9d14ac1f4a213481834e31aa5a7771b",
    "signer": "0x66f062Ac16BC551210BF257Cf0c662C1cF0eD1cd",
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  }
}