{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd8fd61374457c990ed462b9e3aefeae38f128038ec1c38ccb9a1789c9a574ed7",
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    "signer": "0x18812D01A21af146d082352f04d916Caa79Ac73e",
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}