{
  "manageEntity": {
    "action": "Save",
    "entityId": "152924",
    "entityType": "Track",
    "nonce": "0xf241038a03b9cddca4f663a416194cdde02bb4e473d9208c83eea4b4136653d7",
    "signature": "0x0fd9082ba29971a8e4a8930a99e0151741cb36993d97129714973037caabbf69060c1b9c10b394e3369351cff2d7705b6a1c59496481b6999ee843d5b7ef65ac1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}