{
  "manageEntity": {
    "action": "Save",
    "entityId": "465093314",
    "entityType": "Track",
    "nonce": "0xcce3734bf55054cb5b03c38c0d4cd58281251bcc80c8b21f1e08215d98506860",
    "signature": "0xace087b978605c573e7a2e2e457288a8929f18bde4824517c91a5b982e60e57349ba528f507d53017885f1a3c9332609ae34e47baa3d80acc7661ad7e30acc371b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}