{
  "manageEntity": {
    "action": "Save",
    "entityId": "1112997469",
    "entityType": "Track",
    "nonce": "0x3f4425d6cee0c41cd2bc1e04ddd91dff579e41c24a09f07b4eadb74b38bdd123",
    "signature": "0x45b368838401d4f25059db6a288add80518ca8663b0dfda2e35a5e16d955c8492c35fa7670971e8d875ab31adeb706e75cea87df473d6ea5e9df5dc2dc9ce23d1b",
    "signer": "0x868cDCaCaad507eE1eFBbDc02862A479cA5e1433",
    "userId": "614649001"
  }
}