{
  "manageEntity": {
    "action": "Save",
    "entityId": "1994335007",
    "entityType": "Track",
    "nonce": "0x5302c1306f8b457c38fe026ffedbde1e13467fa9b75a0be3b650465b8a93f042",
    "signature": "0x4b954da1a9bca589598d2cae4dc4988f4a8f3b2c5a0828909e207b63a145b197082e69968143428845a773d8703bd8cbaee3e7804bd4c137d37ecfd917a792261b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}