{
  "manageEntity": {
    "action": "Save",
    "entityId": "1176920844",
    "entityType": "Track",
    "nonce": "0xcc9b109b47582db65282f721840356508f8c3d0766fc78ed2e88ad90e17653a3",
    "signature": "0xc18f92e14ccffbdac38172db92c82f88a5e8d11cc46373a8051c662fd6e06754667d6c204742f9d54a6f76606608c5931bb4651fd223710e07d37b11f393edd41b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}