{
  "manageEntity": {
    "action": "Save",
    "entityId": "3412933",
    "entityType": "Track",
    "nonce": "0x8ae6047371728830a4e150098a6ae2a68d951cc1958b19198a85cf8efe99e391",
    "signature": "0x26e47b9926b2c773f35f87f25f9f38fa1e51a0344d561ed3321941f8bb697e4576f24efc8a20e709d40d7596e5e07b84fd8a97a76f8bbd29f3ea17fef08ac8e41c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}