{
"manageEntity": {
"action": "Save",
"entityId": "916396581",
"entityType": "Track",
"nonce": "0x0e2a337532dde50bf680e615a6e62ea49720ec83bc1a14d114b1f969ea3216ff",
"signature": "0xd0fe1c05ba9ac941ce7146cc5c76edcce0fc5fa1b0bf4b611e9f0ff84038e3d925cf73a70909321e6380989e6a9daa2a0b4741d254639e4928012f56269e8d391b",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}