{
"manageEntity": {
"action": "Save",
"entityId": "363808",
"entityType": "Track",
"nonce": "0x81a705fd4eab5bc5588df52e2a9bbb0e5c38d340d7252cbce8faf602e062e1f0",
"signature": "0xf366edbf31febfb7f3a1f0d170ac62a604989b100d066d8986f48199063cb96a08485855c59b31da4ed3a022492fba20307e01f1254a50303a2fc7a13db829a81b",
"signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
"userId": "636236864"
}
}