{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x05c77ba2a69afe257ec20b5482447050489ae4a574649bc24a262fb9e53654ac",
    "signature": "0xb52fba9ae3efaa7bcbd0447bfafe4bd5457fa66a8e990590304bd1cf3a1156cf4d50a374880362c0c6ecbfa8f30d079d21c3fc3438e992d588cbd3e3a498d9fe1c",
    "signer": "0x083626C5983025BFec0Ca7BC8FC5B244f8e29b75",
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  }
}