{
  "manageEntity": {
    "action": "Save",
    "entityId": "1994685059",
    "entityType": "Track",
    "nonce": "0x86f2d70aae5c4e593d7e821dc7c938fbb2adf30c98c517e40104914acd432933",
    "signature": "0x85307d062d962dc418d1987855bf791d342d14c17db6d7cb764f0dc9a37102d735371c474930a8228d0e6f49cc1e4b2ebcf593ec3eef252fbd9b6898db14a14e1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}