{
  "manageEntity": {
    "action": "Save",
    "entityId": "88040",
    "entityType": "Track",
    "nonce": "0xa5c2ed1eeb72f6419f55baa9ef50da594333d170a5fac01ab284548fb5719c25",
    "signature": "0xbcc8ec6c6d0e167ac2c24144236182281cc4a95e7263239f8505aed4c60354fd77112a4afef9dd8c8f57b4d73e3077bce08d1e99fddc3676f230237d24278fc51b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}