{
  "manageEntity": {
    "action": "Save",
    "entityId": "1790607259",
    "entityType": "Track",
    "nonce": "0x0a8841c56206b708b2ac9fc01be925efb799c7e69960deb2ee03999e2484b400",
    "signature": "0xed0e7a060e4b9774cb52ad63b0db7c6e5d7668609e76bfb833f7b90fc39874240859f7c022bd9e8e5dd4f4e0e9d86a177a0d618444de73226ecc91b609beae141b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}