{
  "manageEntity": {
    "action": "Save",
    "entityId": "98577567",
    "entityType": "Track",
    "nonce": "0xa92fc9b1b30eb1ef4a8554d2598529d25c2381a00314bd88ec497a0c769f2ce4",
    "signature": "0x26fe09a117f4197c63ecc0666ea95b6ca279527313981fdea24502d3ad725ebc5e32d288cdf1b2d7dd78e4f6953fc28777f23098c6a0eebe4eef29321fbffaa11c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}