{
  "manageEntity": {
    "action": "Save",
    "entityId": "1104180625",
    "entityType": "Track",
    "nonce": "0xc1937b8f417d2bd59ffcc8c68ff1ba667ad80c860c698087b9ba78ba53a88c84",
    "signature": "0x004d02d89b3ae8941f6e78029971c21ef624e77d9953887ad3d66c4034773d481c79acaf1f6adb2c133d04f0d80b4ea57328567658afd5d4d3f315532646ebdc1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}