{
  "manageEntity": {
    "action": "Delete",
    "entityId": "1251550193",
    "entityType": "Track",
    "nonce": "0x504eedc9c444aad2856dc43ba20ee92e4cd3b2951583354f80b2a2e100e3db8d",
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    "signer": "0x15BC1C0fC475adBfB247A0DE8eca820b198e751E",
    "userId": "505126470"
  }
}