{
  "manageEntity": {
    "action": "Save",
    "entityId": "701930165",
    "entityType": "Track",
    "nonce": "0x060dd722cf38860544f61af77c0920a639937698050b555fa0a3c65146c78154",
    "signature": "0x103c6216771c5bda4c1656ddca553ff8101a5dedf589179374ec7371c9882d6717b2e2062be506a26075d9f8d61a3facc1854017fac3d1d7ff984b412a1ddd761b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}