{
  "manageEntity": {
    "action": "Save",
    "entityId": "1865827217",
    "entityType": "Track",
    "nonce": "0x1eec3f46e8150981b61266c95d3528a714a8ef56d799ef3f56c9370653c7dc1d",
    "signature": "0x21372d37208ee825b828fb5072da656cddf38f0d1406c03b62d584ef202de24949f1258ca05f4f01dd01009db70aba012add4510e20dbf60a729f2c32607d6841c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}