{
  "manageEntity": {
    "action": "Save",
    "entityId": "280573035",
    "entityType": "Track",
    "nonce": "0xeb006585942c72f435381c1cedf26da36bd9534d08990ccef3171e42651500c5",
    "signature": "0x4d6f78697b8f5e904aa2eb7b3d2a912078eafc93689e431055a929a07bded30d52c1f1c954b525e92e83bdef50ab1c0947f32b0f81f1ff15d68a9339901167671b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}