{
"manageEntity": {
"action": "Save",
"entityId": "1142473967",
"entityType": "Track",
"nonce": "1793499416392016774",
"signature": "0x94f639ce6f9dd2e9e606af871740c2c9a7bc221a6729e78133865428b1f6d2f7394f2fd2f5f545b638b4f5e4cd94a5f90a9e7c0a1749b041e829a274bb767c2e1b",
"signer": "0x1007e09532BE90331E035838A9E2E0700bB9741a",
"userId": "329513359"
}
}