{
  "manageEntity": {
    "action": "Save",
    "entityId": "1541261247",
    "entityType": "Track",
    "nonce": "0x1be8a477fe112df7b8aa35652c535bdde639323b4ac863621c6125e0126f01f9",
    "signature": "0x69157772b85605642fb6cf08807ac949eb8cdd48b552141a0e1d5f485d0baa6f4754217ab4a118b305271776520fd29e293daf3c993ab04734a65ae85495ec5c1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}