{
  "manageEntity": {
    "action": "Save",
    "entityId": "1930242542",
    "entityType": "Track",
    "nonce": "0x423760066aa851d3304f0a5eaa3759c0acf6591315d98de6d291a9e705f58526",
    "signature": "0x5d8082721c872771bd8a3604a7109af4df54768dfba81f9b3338c31a66c064ac519c2e947916a40f15c2b61a70db9b3cb79a308098af3d3f4271416b195c3e131c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}