{
  "manageEntity": {
    "action": "Save",
    "entityId": "1064011665",
    "entityType": "Track",
    "nonce": "0x8b7a20abb5248e996066c5d33118ae0312fbc75ad10af88058d7013fc89e3fba",
    "signature": "0xc3f08afcd81886f923a674ff40bca9cc0be81ad9cc453bccab87e0f102ba819b06075713f1e79d604eb6103f55a1390a348ab5e9f3ccc8379bafed8dbd6386161b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}