{
  "manageEntity": {
    "action": "Save",
    "entityId": "183514871",
    "entityType": "Track",
    "nonce": "1790006059283131632",
    "signature": "0x4d98ed5a76b1f910e956aba2fbff989028e5401ea0201aef9d321842302907583af9e9531cfbeb12e6e9a64c72cc4d34f73b3edf1a11e4a0b01e10d33d1e6fe81b",
    "signer": "0x1007e09532BE90331E035838A9E2E0700bB9741a",
    "userId": "329513359"
  }
}