{
  "manageEntity": {
    "action": "Delete",
    "entityId": "900321528",
    "entityType": "Track",
    "nonce": "0xc050fedb4bfdbc5bc45d24187581d02c9dfb5a128d75ebe8b193919b11e497a5",
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    "signer": "0x6FAb9f7Cd20fFE05620b6A2c0FAe2DfADAACb1F8",
    "userId": "291038"
  }
}