{
  "manageEntity": {
    "action": "Save",
    "entityId": "985424047",
    "entityType": "Track",
    "nonce": "0xa4b3f8a38eca9be989af07dd2448dea22bf0f18471b633cce2b4cac508630f30",
    "signature": "0x4542095f8f6cdeb53ac5c295f96693a634cbf54d48310c21db6698ff71cce8fe37b73d7c2f9b51a9c23985fb3ef72801964ccd069c43de9bcb626276baf3d5681c",
    "signer": "0x0D2c1331F52a98aF1Bd206E3C28062E717CA9E51",
    "userId": "597927803"
  }
}