{
  "manageEntity": {
    "action": "Save",
    "entityId": "1992141124",
    "entityType": "Track",
    "nonce": "0x9b963ed0ad7d42f8df7a942500b5fc2d302046f77bd2d86161d90ad4896dfe4c",
    "signature": "0x1fa130e6862e79dd725909c3afd6c74be4d373c8082571df7153d8b1f0863591727441d689dc564e29e10e6f509b1078c0ecb8c8b3072b5cee6efc54fb28b8a11b",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}