{
  "manageEntity": {
    "action": "Save",
    "entityId": "130611",
    "entityType": "Track",
    "nonce": "0x8f73cfa2e7365a762b0cd18a1422196bb8d2475ccdd16484f2d32b1cd0645e95",
    "signature": "0xc44db1b681f673885bfc185cc4ccb936ae986bf70d9294bc1554efd9fc08e4490da9687e6c1b33821b9c29dcbd50bde38bea8e32033517182f5765aae6c443ce1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}