{
  "manageEntity": {
    "action": "Save",
    "entityId": "1969764030",
    "entityType": "Track",
    "nonce": "0x32d82bd59103d5f4da345c2c34392eb4393417b868bce46af9e1e22c501fdeba",
    "signature": "0x93f7e833463945cf4a377c23a41f522cc8e251e17312b6d4793fdb76e256678d562901eb908962f7df0995c9edf3f94335ec7c737445b7e50636150fe0f043ed1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}