{
  "manageEntity": {
    "action": "Save",
    "entityId": "46912458",
    "entityType": "Track",
    "nonce": "0xbd59db39c59b9463cc2f270ea713a22169fc4f833c3303b59fa333f1e9e8f90d",
    "signature": "0xcea9929ab8716e2ed130bd311cf4359d7cbf29f1d456c919fb64186e20e691d96c733715e3a47471232934f4145b84212d3adc33884fb06426e6edcda712cb9e1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}