{
  "manageEntity": {
    "action": "Delete",
    "entityId": "521066",
    "entityType": "Track",
    "nonce": "0x7f4f5524ed13a7301baf755931af9aeb1f51efa6bea1a78aa49dc971ef8b5bf6",
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    "signer": "0x987A4CD7A2ff80f9360b0130AC51e6c254922c39",
    "userId": "142292"
  }
}