{
  "manageEntity": {
    "action": "Save",
    "entityId": "1930242542",
    "entityType": "Track",
    "nonce": "0xc05eee7a51b04dcb412439db0064385934c62092706799daef9eb977ba564f03",
    "signature": "0x92ab9d46fc32ab3519a1c3504a259c026dc67a06fd47885f5cb982d49915dda3585825c1fe66c3cc896bd3ba962564fc7fd52f1464e4a1e19f4ab92d284dc0591b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}