{
  "manageEntity": {
    "action": "Save",
    "entityId": "130869536",
    "entityType": "Track",
    "nonce": "0x4eb0ebe01959d5b742fffe0ad095c28f762f100aa1099cf3d2046af60d23dba0",
    "signature": "0x1de1b7ec1442a7165e067868769282fdbcbccab8d01aa75588f377281fe309e9603f78bc522ffe0ffa8384c98c7719968cfcc486d6403965e86117a979c7bf6b1b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}