{
"manageEntity": {
"action": "Save",
"entityId": "1111601814",
"entityType": "Track",
"nonce": "0x59ff838054f030dc9fbd9ef549da4a6f3a1b4c535b19f6ff40d79cb0636b8820",
"signature": "0x1fe489e00936aa2a20308c575a3e992a2a48d366e55027cd62e3a061cb3b22ad23a77de1264393487616b7dcfa11bc614bb684d1549f51dcbc1536150d28e4ce1c",
"signer": "0x48c57b64a5a12Dc7C7742Fdb629EEce52FF5591D",
"userId": "930634116"
}
}