{
  "manageEntity": {
    "action": "Save",
    "entityId": "1341194333",
    "entityType": "Track",
    "nonce": "0x82e26233d1175905bca6b48690370a24bcb2a3b1f65f9433d3a64b2e26d02f32",
    "signature": "0x89596ce361bac2e500c4688b04417d05d103e2d4b98613709b30b7d2ed0ab5317de0ab27ea3e85ee58dc2108472a241a7757d2d8228cf625df92b7da6c8ef1ce1b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}