{
  "manageEntity": {
    "action": "Save",
    "entityId": "1008070",
    "entityType": "Track",
    "nonce": "0x0c060dcd6b21968022ff0f255448e9da732d3f020481ae44c55e48dcacf87321",
    "signature": "0x7933acf230baae32a1fb9f863fbd1d0b57ea28ed8eb597774c1d895c31d3bcd4330b3731638e08448f379780aa3406727b0b5281c00b599ae36373063d41906d1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}