{
  "manageEntity": {
    "action": "Save",
    "entityId": "433787489",
    "entityType": "Track",
    "nonce": "0x1bdd718146d8d6f3866f2eaddfdbd6edf3fdadeb718aed27769980cddedd11fd",
    "signature": "0x05ac8517414d80b797ad0d744957a22277f656be6dd7ecf436534bea0924c67a5b57c29fe0668ca93f6dc5fa1d1c79f618d70fb875a46a3e44a431ff76ab7f751c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}