{
  "manageEntity": {
    "action": "Save",
    "entityId": "2093718110",
    "entityType": "Track",
    "nonce": "0x1f29cbc6876a01b6c39b8a3a404b9c7b671cd93825a0b796149174877faed1a5",
    "signature": "0xb8133f728375bf58472ef0aee7727706c2fe65bc559c3cc295e96555a0e7e14858f608a9c35ba2bed8572de5092789005427e84b411b6403fbe1cdb47af9e9d91b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}