{
  "manageEntity": {
    "action": "Save",
    "entityId": "1153174010",
    "entityType": "Track",
    "nonce": "0x1c35cb404639cbae00c06eee805fe1b0c4ac18ec8d6af2be2caceb39d5338ef9",
    "signature": "0x386af3b38e2ee5157be0d5b418d7d4fb77fe163b5771c7903fe7af962da1bf6c0b6e1b67eae9998a3e4ebc50c716662d911d42e164c6d8f301edee44e3f39a1e1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}