{
  "manageEntity": {
    "action": "Save",
    "entityId": "1079697301",
    "entityType": "Track",
    "nonce": "0x539c77d412ebd2bd77f1f18fdc13e2a6aa52e68d6946a98390b1410c96ca3f26",
    "signature": "0x83985a415ffa347cc782fc81ef43aad9f406376bc2cd05517b922d2f90430b7c193e98a66d4d4e921fd323ca6e2a83b30ff58a98c59406ea6dea07a368588c891c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}