{
  "manageEntity": {
    "action": "Save",
    "entityId": "1417443287",
    "entityType": "Track",
    "nonce": "0xfafb83e3761a75d9306cbcee61c8a6dc6323b2d08fb8a40a4a696e54310d3eb5",
    "signature": "0x39403800862aa49012c478e36311e6182ad80ef060d3c506c05c8fda55a088c73504a937799e614d83e5c4f80b98a4cf3e910da8f399fcd0c8db03c347d134021c",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}