{
  "manageEntity": {
    "action": "Save",
    "entityId": "1014962",
    "entityType": "Track",
    "nonce": "0x381d989a6de2e6b0ca8c806e9947fee248773a42e506f5611d48353ed9654e6b",
    "signature": "0xc7d30bfe326b5c7aa091c09d6ad7bcb131b893fef4cabe21e64f766ba71f6621755cc09910a047189e785207957f420841d98c56fd355480d023b28121219b881c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}